Clutches and Flywheel combo question?

[01MustangGT]

Just got a KB 9psi on my car. the clutch is slipping badly.
I am about to buy new clutch but i got some question about flywheel and clutch.
I am going to by the Centerforce DF on stangnet partshopper for 339.00 but do i have to have the right part for my tranmission? somehow my car is a 2001 but i have a T45 trans.
Flywheel is really a headache, i dont know which one to choose because there is a 6-bolt crank from Romeo block, and 8-bolt crank for Windsor. My car is a 2001, but it was born on December 2000. Some said that if your 8th character in your VIN# is X= Windsor (8-bolt crank) or W=Romeo (6-bolt crank).
I am really confused now because my car is a 2001 and the 8th character in my VIN is an X. I don't know which Flywheel to order. If the thing about VIN# is rite, which brand of flywheel would i order? and where to get it. I want a Billet Steel Flywheel.
Any help would be really appreciated.
Thanks in advance.

 

[01MustangGT]

anyone?

 

[Wolfman1]

There is a sticker on the driver side valve cover,look closely,it will say windsor or romeo,also oil fill tube will be on the pass.side if you have the windsor,then count all the mount bolts for the covers.
the windsor has a 13/14 set up.