I was involved in the assembly of such a 340 CID combo. But there were no headers yet built for the 71 Cuda. That goes back to ~2013.
I was just the assembler; my boss was "the engineer". I told him there were no headers before he started the project. In the end he bought three sets of headers to make one finished set, And I had to make custom engine brackets to raise and reposition the engine. And that required some clutch linkage re-engineering. And we had to "custom modify" the firewall pinchweld.
We put a honking big cam in her,and in the end, My boss said, she made 497 hp. Those are Canadian horses tho.
Cheeit we couldda probably done that with a 360 and Alloy heads; for half the money....... but the customer was adamant that we build a 340.
Where in Canada are you? I got a 340 block.
