would a 302/289 exhaust manifold fit a 351w only ask is i have a couple sets on diff junk cars and i need them for the f250 they look the same but just wondering

 

They should. I know my friend just rebuilt a 351W and is using headers from a Mustang GT.

 

They will bolt up to the motor, just watch for the exit point, as they exit in different directions for different years of cars and trucks. I used to have 2 different manifolds on my capri, the PO put them on, one had a 1980 date code and the other had a 1970 date code. he had to beat the firewall back a bit to clear the passenger side one because the exit was straight back. I recently replaced them with headers though.