[djcwardog]

Originally Posted by BigPoppaD

I got a line on hopefully some 68 parts. How can I confirm that the intake and exhaust manifolds are truly the correct parts?

I had this data in my spec lists - no guarantee that I have it right, but this manifold works on my car:

1605061 is a 472/500 stock cast iron with EGR – replaced 160955 stock 425 “negative rise” piece.

I also had this from a web poster:

‘68-mid’70 engines used the first generation heat operated choke, with an exhaust passage around the front of the carb. These intakes have a cast rectangular box-shaped choke well. Mid’70-’73 engines do not have the heat passage around the carb, and have a round choke well with what looks like a freeze plug in the bottom of it. (This describes mine) Many ‘68-’70 engines also had no EGR valve. All OEM 472/500 intakes are dual plane.

I surmise that I have a mid '70-'73 intake...

I don't have the parts numbers for the exhaust manifiolds. You want those that have a nice thick front runner (by this I mean the exhaust tube for #1 and #2 cylinder). The ones to avoid are the stock 425 pieces which have huge dimples cast right in on both the left and the right front runner.