Anytime you mess with the suspension you should get an alignment. When you get the alignment they can tell you if the camber is within specs too. You can fix the front camber with a camber kit....but the rear you can do some ghetto engineering with some longer bolts and washers. Camber kits shouldnt be too terribly hard to install...but then when I lowered mine my camber wasnt bad enough to need one. But Im no expert just putting my $0.02