where do i start on restoring my 85 735i? what should i use as undercoating in the wheel wells?is it safe to repaint the grill, mirrors, cowl cover, and the rubber bumper strips? where can i find a good inexpensive muffler? how can i profesionaly prep the car for a paint job, where can i find the rubber surround that goes around the side windows, more questions to follow... ps i already own the car and i think the e23 is a good solid roadcar!!! thanks for helping... sincerly oo7 series