Welcome!! that's going to be a fun project! I've found this forum has a wealth of knowledge which has helped me quite a bit since acquiring my latest Cuda
I did this as well... and I am loving it so far, great light and lower draw on the system. I also replaced ALL other lights in the car with LED (dash, marker, turn signal/brake, reverse). everything is much brighter, especially the dash lights. I can actually see the gauges at night now
1970 Cuda .. how exactly do I get the bulbs out of the side marker lights in the front fenders? do I have to remove the entire light assembly from the fender to get at the bulb? I must be missing the obvious simple way to do it.
There is a company taking new challengers and making them into 1971 Hemi Cudas if you got $250,000 lol. The do look really good though
https://www.hotrod.com/features/1971-plymouth-hemi-cuda-conversion-from-2023-dodge-challenger/
I don't have cragars, I have aftermarket factory style 15x8 with 275/60/15 on the back. They fit and i haven't had any rubbing, but I would say it's a tight fit. I believe the backspacing is either 4.25 or 4.5 I can't remember