Suspension lift for '88 K5

[TheBobbyTrain]

Ok, I have no idea of what to do here, so any and all help is appreciated. Also, I'm starting here for feedback before I go lookin' around for possibilities.

I only want about a 2-3 inch lift, and something sturdy enough to handle towing a boat in the summer, yet still has a ride that is bearable. Who has a good lift kit with everything I would need i.e. springs, brackets, etc.... that doesn't cost an arm and a leg? Also, aside from the lift, what else do I need to accomodate the lift? New driveshafts, anything for the transfer case, etc??? Also, since I have an '88 K5 and it is the older body style, do I use parts for 87 Chevy/GMC or 88 and up? I'm new to all of this so please help me out here. Thanks