where to buy the fiberglass 7.5 diff cover?

[chrwilkins30]

it's a diff cover... if it isn't broke, why fix it?

because when the rust from being in salt for 22 year gets to them they leak and get small holes. I have seen this 3 times between friends and the fiberglass ones would end this from ever happening. why not fix before it happens, so that if its leaking fluid and I don't realize it i don't blow a rear end.