Hooker Headers

[Dad's72]

Hello all. I am picking up my motor tomorrow and the guy is offering me a good deal on the Hooker Headers that are on it and a full duel exhaust system with Flowmasters. My question to y'all is would I be better off with the Hooker headers or sticking with the stock ram horns that are on my 1972 Super?
It is a stock 350 crate motor with a serial number that makes it out of a 1980-1985 GM motor. The motor has the hooker headers on it already but it was in a 1979 and I am putting it in my 1972. Not sure if they will clear for one. But I hear good things about ram horns. Not sure what size mine are. They are stock from the original 350 that came with the truck.
What do y'all think? I have read a lot of posts and am sill wanting advice. He is offering me the full exhaust and headers for $100. I figure if they don't fit I could clean them up and sell them for at least half my money back. And the exhaust and mufflers would surely be worth the other half right?