As one of the original rabble-rousers who brought up the topic of differential covers, I clearly still remember the exchanges on the national CMC forum when it was still an active place to hang out.

I never proposed any of the preload type aluminum diff covers, as I think those could be portrayed as having a potential performance advantage. Instead, my recommendation was a modified junkyard Explorer differential cover for the Ford 8.8 that would have added both a drain and a fill plug to the cover that had magnets on both of them, and included cooling fins and ribs for strength and lower temps to increase component longevity and make fluid changes easier. I wasn't suggesting one of those "expensive" GT500 kind of finned covers either. Check out the following link to learn all about modifying this cheap OEM Ford cover. https://www.svtperformance.com/forum...ny-8-8.653880/