I would cut the inner rear fenders but don’t want the cross bar that Genrights hoops require.
Look at my red LJ build thread. If you set it up with the bracket on the inside the forces cancel out and you don't need the bar.
And with a supercharger the bar will not fit on the front.
You will need to have a bend in the bar to get around the SC.
I’ve been back and forth with coilovers vs just outboarding. I’ve come to the conclusion that if I’m going to relocate the front and rear towers may as well just go with coilovers.
They're a pain. You're going to end up spending more money to get the same results. But if you keep at it you can end up with slightly better results.
You won't get much out of a 2.5" coil over with that axle width. The back ones will go all the way through the frame plus another 1.5", maybe more and then you will either have to lean them back so far it will look very odd or you'll running rims with an effective back spacing of 1.5-2" by the time you get spacers on there to move the tire out.
To further illustrate this, here is a 65wms axle (or is it 64.5 in the rear? I don't remember...), 14" coilovers, 37" tires, 4" of back spacing, at full articulation. There is barely enough room for the coil to sit in there with minimal rubbing.