So I remembered something from years back and went on the interwebs to find it, here it is. It's called the yellow jacket.
-link
I could add a "Jacket" body where there's no black on the fronts and whatnot. Then the sidestep as a side.
Maybe try to add like exhaust mods for example double exhaust or shotgun exhaust
You get side exhausts with the "Drag" rear on the 1970. But I was thinking of
editing the "Drag" rear on the Modern Challenger
Ikr XD. Now this is a very big wide body kit, (to be honest I kinda like it, even though it's weird).
-link
Widebody kits are incompatible. The wheels [by code] need to move out to make that happen.