Hi Fried.....
I actually have done this conversion when I put a 1939 Chevy body on an S10 extended cab frame because it was the same wheel base... 123 inches if I remember correctly. The project went well and was eventually sold after it was 90% done. I would like to keep the original frame though, and the one truck I found that was done, used the axles from a 1950's Chevy... very little to do except move a perch according to him. Anyway, I have a pretty good idea on this part of the project, but the guy installed a 350 and said he had to move the firewall, which I don't want to do, so I thought a V6 or iron duke would get the job done. Make sense? I just need someone who can give me advice about either of these or another V6 option. I also don't want to mess with fuel injection / computers etc. so do want a carbureted model.
Thanks!!!
Dennis