it's been a while,so i'll give an update. i ended up pulling the engine,it just wouldn't start. i'll be rebuilding it in the future. i'm pulling the engine out of my s4 fc and installing it in the se. i have big plans for the se's engine. i haven't been able to make more progress due to an injured neck. here's some pics.it's nothing special.

http://i813.photobucket.com/albums/z...-07-48_776.jpg
http://i813.photobucket.com/albums/z...-24-23_844.jpg
http://i813.photobucket.com/albums/z...1-25-55_98.jpg
7yrs of exposure to the elements.
http://i813.photobucket.com/albums/z...-26-11_492.jpg
i found this rust hole after i removed the engine.
http://i813.photobucket.com/albums/z...-25-20_345.jpg

finally i've made a little more progress. i repaired the rust hole and now i can move on to the fuel system. my fuel pump came today,so now i need to clean the gas tank and reinstall it and replace the old fuel lines. i'll be doing that tomorrow. i've got to get some gas for my welder,i hate the flux wire.
http://i813.photobucket.com/albums/z...t/aa92a0d6.jpg
http://i813.photobucket.com/albums/z...t/dd9472d1.jpg
http://i813.photobucket.com/albums/z...t/59812320.jpg

I've installed my s4 engine,clutch,trans,driveshaft,gas tank,fuel pump and filters,exhaust,radiator,clutch master and slave cylinder,new tires. the engine is running,so now I'm focusing on the brake system. I should be driving it this week.
http://i813.photobucket.com/albums/z...t/6960b50c.mp4

What harness/ecu did you use to put the S4 engine in? S3 electronics and S4 engine/manifolds or did you rewire everything?

I used: s4 engine,intake manifold(secondary injector holes blocked), blocked off bac,egr,s4 water pump housing and pump.
s3: engine harness,injectors,rats nest removed,tps,ecu.
nothing in the wiring was cut or modified. in the clip it's idling at 4k rpm,I switched to the s3's tps and now it idles around 900rpm.

OK cool I have a friend wh is going to do this very thing on his GSLSE and I wanted to confirm it will work out as planned. Thanks.
any pitfalls to watch out for?

Good stuff man!

I wondered what happened to this one. I want a GSL-SE some day.

Nice man! Be sure to get all that rust off it =)

Thanks guys,it's been slow getting it to this point.there is a down side,if you use the s4 water pump housing,you can't use the se's clutch fan. you could possibly use the s4's fan or go efan. also you might need to use the se's coolant sensor. you can't keep cruise,unless you make a bracket for it. you have to use the s4's alt bracket and the se's distributor. good luck,if you have questions,just let me know and I'll try to help.

don't forget,you have to use the se's oil pickup tube,oil pan,front engine cover,air temp sensor. the tps bracket is different on the se. you have to remove the se's tps and install it on the s4's bracket. It's held on by 4 tabs. The se and s4 use the same omp,but the rod is different. I just used the s4's.

I've got the front brakes installed as well as the pulsation dampner elimination bolt. I need rear calipers,they're frozen. I drilled the holes on the se's fan spacer bigger,so I could use its fan.

update. the rear calipers are now rebuilt the system's bled. the car is finally off the jack stands and is ready for driving. I plan on wet sanding the tops and then buffing the whole car for now.
http://i813.photobucket.com/albums/z...t/ffcb2888.jpg

Nice! Good to get some progress going on =)

thanks. I've hit a speed bump though. I went to pull it out and take it to the car wash for a thorough cleaning and the engine died in the driveway. I was letting it warm up and it hasn't ran since. I've checked the coils,replaced the distributor,plugs wires. the cap and rotor are good. there's no power getting to the coils. it stared one time for about 2 seconds and that's it. I haven't had time to check anything else,I've been busy. I need help with this one,I'm baffled.

I ran into something like this, it might help. I used the entire 87FC harness when I swapped my 13B EFI FC engine into my 79SA so I'm not really familiar with the GSLSE harness. If it's similar (which it should be), your power for the coils will be coming from the main relay. Check to see if the relay is working when you turn on the key. If so check that the battery power is actually crossing the relay and making it to the coils. I've seen several people, besides myself, have this problem. It drove me nuts for a week until I figured it out.