Cadillac 331 bellhousing question

[40coe]

Thanks to all for the great tips. Seems like adapters for other transmissions but not the Laselle trans.
I did do a trade recently for what I thought was a 55 Cadillac bellhousing to Laselle trans. It is an early aftermarket made from aluminum. (Maybe JC Whitney). Turns out it is for the early Cadillac block, (should be about 3" longer). I still think it was a good trade being made from Aluminum. If I can't find one then I will cut this one and add a 3" section.
If it doesn't fit make it fit!
Photo shows factory cast iron bellhousing and early after market aluminum one.