Don't think a tbi will work on it side to well. I bought a 91 astro van and took the tbi system off and put it on a 261 in my 55 cameo. used 4bb intake and tbi adapter. stock program in ecm. just put 305 ci. in place of 4.3 injectors. Port injection would be the way to go. The air throttle body could be on it,s side..
