Rough Idle and Electrical Problems.. HELP!

[TS87FC3S]

ok new issues with car,(88 gxl) i fixed all previous issues including idle fluctuations and hesitations by cleaning fuel tank, new filer and plugs, adjusting tps and cleaning throttle body. i also gutted cats and ran a custom 2.5inch cat back, and wired open 6 ports.

Now here are the new issues;
Car has a crazy multiple random misfire at idle, and when u hold it at constant rpm with no load. flipped wires around kinda helped then started doing it all again. (i did the propane check to find leaks and noticed nothing, have pulled plugs they look fine, air filter looks fine, fuel filter has maybe 1500 miles on it, im just kinda lost)

Also at around 6k it feels like car loses all power, nose drops but rpm still try to climb.. so bad that in 2nd foot to floor it wont get to the buzzer.. here is my concern with this rpm still slowly try to climb but wont pull, during this trip i had a hot brake smell i was hard on brakes but not sure if it was clutch or not (xtd stage 3 clutch came with car i put it in and did the break in it has like 2k on it)