Re: Aluminum Diff Covers
Hmm - I would definitely drop Mag a line. Since our differentials are different I can not comment on modification issue. If it so - it raises a red flag which Mag better address very quickly. My installation experience was more a less a non event - per installation manual. However, I agree with you 100% that after shelling out $250 bucks the silly thing better fit and perform as advertised.
//RF
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"The Beast"
1975 Chevrolet C20 longbed
350/ 700R4! with 3inch body lift
Dual Flowmasters Super 40's!
TBI retrofit completed (2007-07-29) 
New 383CID (+030) 08-304-8 9.5:1CR x36,005 (2012-12-17)
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