I'm still one of the guys that likes to drive them more than wrench. However, I know to much for my own good. I can't get away with the same things most guys can. Everytime I've ever tried to cut a corner, it's back fired on me because I know better. So I've just learned to build to my expectations. Do I need a road race pan and an accumulator? Doubt it, but I sure don't want a rod through the side of my new block. Do I need a rear end and tank vent through the trunk? No, but I don't like a mess underneath. Is the heat exchanger necessary in my radiator. Aluminum blocks sweat more than steel blocks so it's nice to bring the oil up to temp faster. Not a neccesity. Do I need a clutch rated for 1000hp? Maybe not, but I dont' want any problems on the track. Do I really need different brake pads that are coming next week? Nope, but I hope it improves the performance on the street and track. Did I have to spend countless hours working on the minute details. Nope, but the car has my stamp on it. Every change I've made and I'm leaving out about 100 of them has improved the car. To me it all comes down to your expectations. I'm chasing the best driving and suited car for me. I want it to feel like it was custom tailored and fits me like an armani suit. I'm no where close.