TECH SUPPORT!

I have to over night a clutch which I'm assuming i'll get it Monday. The trans shop called me and there having problems lining up clutchs to my STOCK flywheel. Before I call :bs: have you guys heard of a stock flywheel not supporting street/strip clutchs? I'm so confused and i feel that i'm gettin shafted. :(

I'm thinking about these clutchs:

1. Spec 2
2. Center Force
3. Center Force Duel friction.

I need a high reving clutch that can handle in the 400-500hp/trq range.
 
He has been ordering the clutchs all don't fit. He was talking about the 10.5 and 11" clutch thing but he was talking so much about it he confused me.<confused me because it doesn't seem that hard to figure out> I have the stock flywheel and stock clutch size is 10.5" right? So when i order a clutch which one do i need to order that bolts right up. Do I need to ask for a 10.5" or something.

I'm kind of pissed that i have to do this crap. I took it to a shop so I can work my 10 hours a day, go home, relax and not worry about the car. F...'n lucky my car broke by near the shop or I would have just took it back to chicago and fixed it myself.

Thanx a lot guys for the help.