Well if you race and mess up, you might not see tomorrow. If you pound and mess up, you might not hear tomorrow
Diesels are awesome - never seen a diesel mustang, but there's at least one diesel corvette around. Crazy badass, that.
As for rotaries, I hope you got deep pockets or are a gear head and can memorize the FSM - those things are worse than GSX's. Beautiful engines, wonderful idea (especially the 3 and 4 rotors //content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif) but expect to be under the hood at least once a week if you're making that kind of power. Apex seals ftl.
Personally I'm getting all my electronics done before I'm going for fast. Got my brakes done, got my stereo in the mail, computer's going in next, scanner and V1, then for suspension and stiffening, then finally the engine and drive train. Get it all ready first, cause I know once I start chasing HP it'll never stop