Inner fender removal for weight reduction?
Cut it out, I welded the seams after cutting the aprons out.
Most a body race cars I see have it done, I've never heard of anyone saying their car was weakened.
The j-bar will add in plenty of strength and the weight of the bar is still a little lighter than the aprons.
Make sure to tie in your shock towers and it is very strong.
I have a 12 point cage with a couple extra points added in mild steel, plus my 1/8th thick 2×3 framing I only added 260 pounds to the car.
My car should weigh under 3000 pounds with all steel parts.