I may have been thinking of the multi-pattern bellhousing that Moparmarks posted. After thinking about it, I'm not positive the multi-pattern bellhousing I saw was for a small block. It was years ago.....so I can't say with 100% confidence which engine it fit. The guy who had the bellhousing LOVED 440 powered W350 trucks with the 435 transmission. He built several trucks with that drive train that he used for towing.

They made some bellhousings in the later 1980's that had a hydraulic clutch. Does anyone happen to recall if those were those multi-pattern?