Im getting a 9inch rear end from my buddies 71 F100 or F150(cant remember). At first he told me it had 3.70 gears and a limited slip but now he cant remember if its a 3.40-3.50 or 3.70 ratio. Oh and now he doesnt think its got a limited slip in it.Its a stock rear end. Anyone if theres a tag on it or what the stock 71's came with? I know I can turn the yoke and count how many times the yoke turns to 1 revolution of the tire but I dont have the rear end yet.