Inliners International Forums General Discussion Drive Train t-5 clutch disc

I'm putting a t-5 to my 292 and The closest I can get is to run the firebird clutch disc in the 292 pressure plate. It's a little smaller than the other but has the right splines for the tranny. Can anyone tell me the best place to get the clutch disc? the tranny is from an 89 firebird. Thanx,G