I just finished up a GT500E Convertible, I bonded and Riveted all the Side skirts, wheel wells, frt valance, bolted the upper nose cone, then blended all the the fiberglass except for the upper nose panel. I also trimed off the lower parts of the frt of the fenders after I attached the valance. Cracks may come though in the areas between the exhaust skirts and lower quarter behind the door. This is the only way to assemble the parts that look normal. YOu could seem it in all the places the parts come together and insure it wouldn't crack, but it wouldn't look right. Yes I assemble the frt fender & all the fiberglass before I painted. I did however, Jam paint the back sides of the fenders & the door post before I assembled. Big hassle keeping over spray off the door post while priming, body working, painting. I also assembled the doors with the new hinges before painting, to do the fiberglassing on the doors, (To match the scoops). then removed the doors for paining. Overall, Toughest restoration I've done. But now that I know the different ways you have to do all the steps it shouldn't be as bad on all the rest. I'm trying to upload pics but the site won't accept them for some reason. I'll keep trying. Good Luck.