I have a very nice 5C4 dated HiPo flywheel, C3OE-6380B casting number. It doesn't look like it's ever been resurfaced. Part of the orange paint daub is still there and the Brinnel hardness mark is plainly visible. The guy I bought it from said it came from his 65 GT350 but no way to verify that.
I'd like to trade it for one in the same condition dated Jan. or Feb. 66.
Thanks,
Dave