I think some of my brain dripped onto the floor...
If you are going to build a 600whp street car, I don't think you understand the magnitude of that. 600 Horsepower streetcars are somthing that shops and tuning houses pour their resources in to make a dream come true. We're talking all custom, big dollar corperate budget type stuff.
600 horsepower track cars are built by middle-class men in mid-life crisis, and the hick-folk with their 79 TA that they've had since high-school.
Jump on Honda-Tech and search for Oaks Racing. I want you to guess how long it took them to make that Prelude, and how much money. And it still isn't done. This isn't somthing you do with a tax return because you feel like it. This is a 3+ year engagement for a regular guy. I doubt many of us could even keep a girl that long (they're too expensive anyway).
Re-evaluate what is feasible.
-Nate