Dwwv4; Only buy them if it's a deal, them heads are every ware.
So don't spend alot for them, It's the same head that's on the
351 and 400M it has a 2.05 intake valve and a 1.65 exhust valve.
The early 351W head was better there the 302 so there not the
some they had a 1.84 intake and a 1.54 exhaust.
The early 302's only had a 1.67 intake valve.
Now I can get in to differant size head bolts differant water passages
between early and late heads.
The thing is if your not building a cleveland or a clevor motor,
Don't waste your money on them you can find them everywhere. Kurt