Thanks for your help everyone, I got it. I was able to snake a 3/8" tap into the door/fender crease & turn it in with a pair of small vise grips. I then used a 1-1/4" 3/8" bolt with threads all the way down & it tightened right up. THANK YOU

70 Roadrunner convt. street car 440+6, NOS, 4-spd, SS springs '96 Mustang GT convt. street car '04 4.6 SOHC, NOS, auto, lowered "Officer, that button is for short on-ramps"