[Sully D]

Hello, all. This is my first forum post, so I hope I do not violate any posting etiquette. I'm building a 37 chevy coupe, finished the front suspension, and am getting ready to start the rear. My rear fenders are in good condition, but I want to fit some meaty tires on the back. I understand all about wheel offset, backspace, tire sizes, rear end width, etc. The current skinny tires that fit with original rear fenders are P215/70 R14. I have about 2-3/4" clear between the tire and inside obstruction (frame). The outside of the tire is directly under the fender, so it would not tuck within the fender if lowered. Wider fiberglass fenders are commonly available in 2" extra wide. I hate to pay about $1200 (wider fenders + required wider running boards) and only get 2" extra room. I would like 3 or 4" extra wide to fit some decent sized wheels & tires under them, and have them tuck when lowering my air bags. I am having a rear end custom made to the width I want, so that is not a problem. I am thinking about just getting the 2" wider fenders, and cheating the wheel/tire inboard closer to the frame. I just don't know how close I can set the tire to the frame without potential rubbing. I also thought about cutting the fenders and trying to insert a 3" wide strip, but that would probably be ugly with complex curves, etc. Any suggestions (besides tubbing)?

Thanks,
Sully D