I regularly weld 304 stainless parts to mild steel at work, using ER70S-6 wire and C25 gas. Obviously the corrosion resistance of the weld area will be effected, but not a big issue for something that will be coated. The parts I weld are all powder coated except the turned threads on the ends of the stainless components.Thanks man. I wouldn't have guessed that much on the repair panel cost. I was hoping I might get lucky and hear they were perhaps 1/4 that price and would fit the BJ73 frame and I could go about repairing. At some point it will be time to tackle this and I'll be in the market for a windshield frame. Right now other things are priority. .........On a steel body repair note for anyone who knows out there: I recently successfully welded stainless steel to mild steel using mild steel welding wire and straight argon gas.......I think I will find some scrap stainless sheet metal (old sinks, apliances etc.) for patch panels when I do rust repair..