when you lower the rear of a 4wd is there anything else you need to do.....like align driveline? Is it easier on truck parts then say a front level kit. obviously there is no need to align wheels. I am looking at this kit pretty seriously just not sure if there is anything else I need to watch out for. Is it hard on 4wd system? Ive search the forum but cant come up with much info.
Lowering the rear is much better/easier on the suspension than lifting the front. Lowering the rear 2" really has no adverse effects. Granted the axle will be offset a hair due to having a panhard bar, but you're talking less than a half inch, and probably even smaller, so it's really not a big deal at all.
Also, if you cut coils I would really underestimate when you cut, as you can always cut more, but can't do anything if you cut too much. If you only need 0.5" to 1" I wouldn't cut half coils at a time I'd do more like 1/4 coils at a time.