KNOWN:

270 GMC motor, approx 1952
14 spline on S10 T-5 trans
Starter is 12v

I have the NAPA clutch disk recommended by Dave at Vintage Metal Works - who sold my bell housing adapter, but I received the wrong clutch kit from my supplier.. I think there's a difference in size and I should have ordered 4x4 or not???

QUESTIONS???
What is the part number [or application] for the correct complete clutch kit?

And how can I know if I'm running the right flywheel

Appreciate the help very much!