Hey guys, I have recently bought and am rebuilding a '70 Ford CrewCab 4WD shortbed pickup. I currently have a 390/NP435 drivetrain and am looking to see if it would be worth it or possible to trade this monster of a motor out for a good I300 with either a C4 or C6 transmission. It is a 4 wheel drive pickup. I guess this all begs the question, what am I looking for and why am I considering doing this. I have always liked the I6s, have had a couple 240s and never had much trouble with them. With my CrewCab, I don't plan on doing any rock climbing, just using it as my nice driver truck and if I ever needed the 4wd, I would have it, but not to pull anything huge. It is a city slickin truck from now on :p I would like to find a newer 4.9 efi with the automatic tranny to fit in it. What do you all think? From what I have found, I can get more hp/torque out of a reasonably built I6 than I can out of my stofk 390. Anyone have any specs to back that up? Thanks for your opinions!