Number: GM1A Years: 64-79 Description: TC 12" DIAMETER. L6 V8 FIXED PITCH STATOR, STALL 16K-18K, 10.750" BOLT CIRCLE, ( CAN USE GM4401 when out of stock) Input Spline: 30 Pilot Size: 1.700 Hub Type: SLOTS Mount Type: 3 SQUARE LUGS Lock Up: NO Price: $95.00 Refundable Core: $155.00