I have a 57 Chevy 3200 PU and am replacing the inline-6 235 with a 350 SB. I am keeping the GM431 3-speed transmission, but am having a hard time finding the proper bellhousing as the old bellhousing is too small. The crossmember cradles the bellhousing as can be seen in the photos. I also added a photo of the old bellhousing with the mounts attached. The closest I have found so far is southwest speed, but I don't think those will work either. Any advice before I use a different style and custom fabricate a bracket?