You can grind the mounting lug down on the 7.5" IIRC.. I should realy compare my 7" and 7.5" units..
Do you realy think your going to need a 4.1?
Are you going for an LSD?
I am going to be running a 7" Non LSD 3.6 diff to start with on the roadster and may go to LSD..
TT
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