I gotta go with Tech on this one, if you spend the money on the right driveline and suspension peices the car will work better with less horsepower simply because it can hook up and not gernade the drive train. If you want to just do smokey burnouts, stay with the narrow tire, or get a wider tire that is a real hard compound. If you are going to double your horsepower output from stock, you have to have a drivetrain and suspension to make it work or you just blew a bunch of money on horsepower that you can't use.