Anything can be changed/swapped. My car isn't a 442 but has all that on it from a 442 parts car. Your VIN says it was a 350 2BBL from the factory.
There's basically three types of Olds owners. Those that:
1. Don't care...it's a ride.
2. Total restoration. Every nut and bolt part number must match.
3. Restification. It's MY car and I'll make it like I want to.
I'm #3...but I understand #2. If you are #1, then ya shoulda bought a Ch#vy!
C.J.