U bolts for a '32 BB crossmember?

I wanted to get my truck frame into a roller until I decide if I'm using it or buying an aftermarket frame. I bought a T-34 U bolt kit, but it seems the big truck crossmember does not work with that kit. I have seen a few threads with people using the truck frames (although I do not remember if they kept the crossmember).

Can anyone tell me where I can get u bolts that fit this crossmember? I can only find 2 1/4" or 3" and larger u bolts. What I need is less than 3"...the 2 1/4" is roughly .5" too small. This might be a reason to just buy a new frame and use a model A crossmember