There are only 3 headers for street, street strip that do not go under or have the steering linkage go through them and non are cheap. That’s just the bottom line and how it is so....

TTI stepped & 1-5/8 to 1-3/4
Doug’s @ 1-5/8
Hooker Super Comps @ a 1-3/4 tube.

I have a ‘73-360-4spd Cuda and I use the Hooker Super Comps for many years now. Fit is excellent!