You’re just gonna shove em out the front fender like all the cool kids anyways.....

That's it! Many thanks!

The Road Runner had fender well headers on it almost 50 years ago. I spent a lot of time and money on correcting the hack job to do that mod. No way, no how, am I cutting one single hole in that car to fit headers.

I need to re-route one tube for steering link clearance. That link looks like the answer. Thanks!

Thanks for the link. I like the U bend cutting fixture. Might have to buy a couple different ones.

Have you seen this article? https://www.musclecardiy.com/perfor...tem-math-build-high-performance-engines/
Written by John Baechtel. He talks a little about the different programs available and then explains how to calculate header dimensions using formulas from Jim Mcfarland. Checked dead nuts against one of John Kaase's engine masters entries.


Also some of David Vizards books cover exhaust tuning.