<VV> GM heater motor part number

[4carbcorvair]

I was trying to verify a heater motor part number. It's GM NOS, part
number 1# 4960476 This motor is different than the one I pulled from
my Corsa, which also could have been changed at some point. Wondering
if this NOS one is a direct replacement? Where would I be able to
search the old GM part numbers?

Thanks!

-- 
Ron Tinkham

66 Corsa Convertable, 140, 4sp.
Maine