My 99 GSR is going into the shop on the 22nd, and I need a new clutch and flywheel before that. I am clueless when it comes to clutch and flywheels. My car is going to be turbo'd in a couple months and putting down 250hp - 275hp. Next year I am going to sleeve the block and shoot for 400hp

What brand clutch and flywheel should I get?
What stage clutch should I buy?
What weight flywheel should I purchase?

Thanks, Dave