yes, you are right about parts availability. 'somebody did it for you'. you could call it robotic. everything the same. the hunt for 350 parts is always fun. you meet all sorts of people. some good, some bad. i've run 455's, v6's(another project) and the 350. over time i have about 25k in this engine. do i fear blow up, yes, but i would build another. 350's are tough. 7500 is not an issue, some wear always is. have you looked at the ls bottom end and crk shaft location. it looks like a 350 buick. wonder where they got that idea. if i wanted it simple, yeah i would buy chevy. but i don't like it sinple, not my background ben, if we meet, you know i will you tease about putting in a mongrel. no mercy.