Hi all. I've owned my '96 Roadmaster wagon for about 7 months now and feel I need to change the rear end. It's a factory 2.56 non-posi. I don't get the gas mileage to justify such tall gears plus it's very sluggish. The one tire fire is what aggravates me the most. Therefore I want to install shorter gears and a posi/locker, ideally 3.73's. I know I have a series 2 carrier, and those gears aren't a factory option. What exactly do I need to do this? I've read somewhere that you can put spacers in a series 2 and install series 3 gears. I've also read that any 8.5 series 3 carrier will bolt in. I'm willing to buy new parts or pull something from a junkyard if gears out of a pickup or something like that would work. Just looking for advice from someone who was done a swap like this or witnessed firsthand. Thanks.