ok? for the extra ummm 2k you save on not getting an ls1 i think the lack of 50hp is hardly an issue. and yes i have worked on a push rod engine, I've had to install them and do a rocker ratio geometry on them, what makes push rods more simple? sorry but every time i get a new cam i don't feel like doing a rocker arm ratio check so my cam isn't useless. there can be push rods out the made of inconel they would still be gay. I'm sorry but fact is push rods are alot cheaper to manufacture then a dual over head cam design, cheaper..... not better. its going to take alot more money to get to 10,000 rpms in the ls1 then a 1uz. i like the ls1 but i love the 1uzfe