Here are pictures of my built 20B.
If you look at the cart in the back, there is another 20B that's ran on a stand..
OEM 2 piece 2mm seals, REW exhaust sleeves, touched up intake ports, lapped irons and housings, All "D" series stuff except for one rotorhousing from a # series..
Builder is my long time friend/rotary engine builder
Luis Canizales. Luis has been buiilding rotaries since early 70s.. and built his own lap table and each engine he builds gets cranked on an engine stand. He knows things about rotaries that some have no clue on.. And even after my 4 years of researching on 20B.. He told me things that opened my eyes.. He also owned most old school rotaries and has an R100.. which he is considering to bring it to DGRR 09..
If you want him to build your engine, he's not cheap... but also not insanely expense. What you pay for his time, is WELL worth it. I always say.. If you want an engine that will last and built right, you could contact him.. His number is: 256-458-8900