1BadZ95

I'm fixing to buy this clutch but want to check to be sure this is the right one for my setup. I'm buying a Spec stage 3+ for my 95 z28 that we have a Tremec 5 speed with a 10.5 inch pattern with 26 spline. I'm putting it on my late model 350 SBC 86'-early 90's block. This is what I was told I needed by a spec dealer. Is this correct?
SPEC Clutch Kit Stage 3+ - Chevy Camaro 1982-1992 5.0L
Model SC193F