Pursellauto:
There are two sizes to bell housing depending on size of truck. What size truck is it?
S few are listed on eBay, but shipping is a bit expensive. Here is one for $40 , but shipping is from Iowa, for instance.
https://www.ebay.com/itm/163995471417
Craigslist has a motor with bellhousing for $200, but it is in Colorado springs.
Bolt pattern for the engine is unique for these motors. Parts are out there, but a bit of scrounging is typically required.
Hope that helps.
Regards
Steve
New Orleans