I've got a 86, with a 3 inch lift with 31's. I want to get bigger, but i don't know how safe this is or what would go into it. i want to go long arms, 6 or 8 inch lift, biggest tire i can fit. anyone done this lift what goes into, drive shaft issues anything. would i have to go bigger axels thanks.

 

that's a really loaded question.
with 6" lift you will need SYE, driveshafts.
with 6" lift and extensive trimming you can run 37" tire or larger.
with that much tire you will need heavy axles/brakes.
with that much axle/tire weight, you really should be reniforcing the chassis.
with that much tire you will need aftermarket steering pump, box, linkage and more chassis reinforcing.
with that much tire, you will be getting into places where you will need a cage.