[427sharpe]

Thats the nice thing about 5052--it WILL NOT CORRODE! Just wipe it down w/WD40 and you're done. As far as the use of roofing flashing, I have never found a supplier that has very high quality, one that will hold up well over time. I think it's better to go with .040 the first time, and be DONE! The 40 is a bit hard to work, but when you get the groove going, it will hold up forever...even in the wheelwells. I checked a lot of places, and Trident had the best price going on the size sheets I needed, with plenty in stock. I highly recommend them to anyone, especially if you're in the DFW area.