The bolt size for the 4 threaded holes is 1/4 28 threads. Very rare part, few if any actual NOS out there. Priced less than any other new one, buying the part pictured. Almost everything I have for sale is actually pictured.
OEM NOS Ford Motorcraft Pulley GPE-662 E92Z-10344-C
Precision 1168P Two Groove Pulley NOS
Hampton 64 Tooth 8MM Supercharger Blower Pulley - NOS
General Motors GM Engine 2 Groove V Belt Pulley NOS Hot Rod 1348048 New 02AA2
1967 1968 FORD MUSTANG GALAXIE NOS BRAKE CYLINDER CAP RETAINER C7AZ-2B245-C