Easy to adjust. I'm about done with a Summit 2-1/2 kit that needed a slight modification to use on my '79 small block Magnum. One note though, the advertisement said "For Hooker Super Comp headers" which are different than the regular comp headers. The collector exits are in a different spot and angle.

I have the super comps on my Magnum. I had the regular comps before it.

You can use this kit with minor cutting. The over the axle pipe is a 2 pipe slide together.
It is possible.