i have a few ?'s for you guys. like why did you pick a 400 over a 350, what kind of costs are there involed, what is a good conveter

i want high 10s on spray and have been told that 4l60es dont last when you go that fast. right now i am running a 12.2 at 111 on a 60 shot with gears a stall and a pulley. when i put a cam and LTs and finish my suspsion i was hoping to be close to 10s.