I'm thinking about swapping out my stock gears for a 4.10 in my M6. First question... how much does this mod usually cost to have done? I don't trust myself to be able to handle this alone so I'd rather have a pro install the gears. Secondly, anyone know if a good place w/i an hour or so of the Lehigh Valley/Philly/South Jersey area? Thanks in advance.

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Steve
2002 Trans Am WS-6
M6, Pewter, Flowmaster 80 Series, and CAGS eliminator (FINALLY!)