Try GM ECM at diy-efi.org You can adapt just about any system to just about any engine, with enough reprogramming. I'm starting work on a TBI system for a 250 that's going to go in my 1954 GMC Panel, I have a computer for a 4.3L V6 that will drive two one-barrel TBI units on a two-carb manifold. Once I make some progress, I'll post more info (that may be a while...).

Get a REAL truck, get a GMC! www.oldgmctrucks.com
1954 GMC De Luxe COE