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Rear diff ratio's for 5 speed swap
I just bought an 05 WRX transmission the other day, I was asked if I also needed the rear and I told him no because my car has some rear diff in it already and I knew it had an WRX trans in it for a while so I assumed it was a 3.90. Upon asking the previous owner he says its a stock SVX rear but that the ratio is the same as the WRX... But from what I've found so far the rear of an SVX is 3.55. Is this correct? Do I need to go back and buy the rear diff or is he correct and I sould save my money?
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