Where to start...
1000 rwhp in a Saleen Mustang? You're out of your mind. It would cost you in the range of $30-50,000 to even think about getting that. By the time you were done, even if you did do this, it would barely be a Saleen Mustang anymore. You'd have to engine swap, because a normal V8 couldn't possibly put out that much horse without you blowing it. 1000HP daily driver? Not where I live. I'm in California, and that's completely illegal. With 1000HP you'd HAVE to run slicks, you'd HAVE to have wheelie bars, and you'd never get away with driving that here. You'd have to cage the entire car, engine bay and all, you'd have to reinforce the chassy, drivetrain, and frame. The car would be so incredibly loud you'd break every sound law there is. I go to the local drags occasionally, and trust me, cars that are running 9's and 10's don't have your everyday V8's. It's not plausable or even practical to have a 1000HP daily driver. Some alcohol engines don't put out that much. Good luck sir.
Also, who's "Integra Type-R" is that? Reason I say it like that is because everyone and their brother has an integra here, slaps Type-R stickers on it, Type-R badges and thinks it makes it a Type-R. Show me your engine ;P
Now, here's my car.
1969 Chevrolet Nova - Purchased for $2200 2 months ago
Interior is brand new. Just bought a new radiator, currently running a Straight 6 250ci Chevy engine with a 2 speed Powerglide trans. It'll be up and running monday when I get a new coolant line (had to cut the old one to get the old radiator out)
Future Plans :
Chevy Small Block 350ci 350HP Crate Engine
350 Trans
Ford 9 Rear
Possibly a supercharger
Reinforced chassy/drivetrain
Cage
Disconnect rear brakes
Front disc brakes
PAINT!
Yes, it'll be a dragster. By the time I even think about this i'll be buying a POS $500 daily driver.