baggin rear.

Any tech articles? What do I need to know? Probably a four link? Gas tank problems?

You have to move the gas tank if you run a 4 link. You can run a 3 or 5 link if you want to keep the tank in the same place, but you'll need to raise it up. But make sure you read up on how to set the bars at the right angle and to get the pinion angle set right, thats all very very important if you want your suspension to function properly and not wear out your pinion too fast

I know how to set it all up. I'm just curious about the more mazda specific hangups. I've been doing a little searching but don't have much time. And I don't have the truck yet to look at so that is also part of the problem.

Dependin on the wheels you have, you'll have to flare the bedsides cuz the axle is so wide. But i dont know of any other big problems you could run into