ok, so I bought this thing with a mini-spool 4:10 rear end in it and I think I should probably swap it out before it all goes to hell. I'm thinking limited slip since it's mostly a street car and frankly the combo of the 4:10 and 4sp aod is questionable. rear ends and transmissions are a foreign language to me so can anyone point me in the right direction on how/where etc? I need to bulk up/research. books or links would be great.