I remember reading in an old AWOL magazine that an R90 or R100 airhead engine will bolt right up to a Ural's tranny. Something to think about.
Steelheart- '03 Speedmaster Black/Yellow
The Hayabusa Killa
16" Shorties/140 mains/Airbox drilled
Procom CDI
"There is no cure for Celibacy. But we can treat the symptoms."