Help with this pully ID

[70-SS/RS-L78]

I am going through a bunch of stuff and I can not find what this pulley was used on. Any help would be greatly appreciated.
It is a Deep double groove water pump pulley.
Part # 3848904-CS

[Mr70]

If it has a 6 and 9/32" O.D.,it was used on:
*1964-65 Corvette w/Spcl.Hi-perf 327 & A/C.
*1966-68 Corvette w/Spcl.Hi-Perf 327 & A/C w/o P/Steering.
*1968 Corvette 427 w/o T.H trans. & A/C.
*1968 Corvette w/Specl.Hi-perf 327 but NO A/C.
*1968-69 Corvette w/Heavy Duty 427.
*1969 Corvette w/Hi-perf & Spcl.Hi-perf 350 but NO A/C.