Google will find you a B-body T-56 swap kit in a few seconds.....
I tried SST. They have the parts, but won't separate them. I just need the Crossmember but they claim it won't work for me.
Bummer, I was hoping they'd sell separately for you. What all do they want you to buy to get it all?
The convenience of getting everything on a pallet sure is nice and not all that much more than piecemealing it.