Need Exhaust Manifold Advice
Looking for help on exhaust manifolds. I have a 1971 motor with the following head info: Exhaust Port Casting 99 1971 – 400 – 265 HP
The person I bought the car from had put headers on the car but must have realized all the bolt holes didn't match up so he just installed 4 bolts and he jammed a bunch of gasket goo in the gaps at the ends and now that I have the car running, it's leaking like a sieve.
My question is this - I want to install stock exhaust manifolds and I see lots for sale on E-Bay, but I can't tell if I need the type with 4 bolt holes or the kind with 5 or 6. I can't see how many it needs because the headers cover up the entire area and I don't want to start tearing it apart until I have the replacement manifold.
Can someone give me some pointers? Anything I should look for that would let me know I'm bidding on the right manifolds. Many seem to be saying they will fit any 350-400-455 motors, but I'm skeptical. I've attached two pics of ones I've seen on e-bay. One has 4 holes and the other has 5 holes.