thank ya, I thought but thats when I usually get in trouble.. 4.3 is a cut off 350 but wasn't sure if gear box would bolt now I know.. Do ya work on boats in cocoa or cars I see you and Felber building big engines.. any way goin to look at 4.3 tomorrow suppose to run and the price is right I just gotta put it ... might wear ya ears out if everything comes together...