944 early disc vs turbo disc
 

I am running early 944 discs(28mm) with 944 turbo brembos at the rear .
The fronts are all turbo .disc and caliper.
I want to run a thicker ventillated disc at the rear but the turbo rotor too big.
What disc has the same dimensiions as the early 944 na disc(without its spacer) but has the thickness of the 944t disc?? (boxter??)
Cheers David