I'm holding off on lifting the K5, as I have decided on going with a 3/4 ton 14 bolt open rear. Is this something that I can do on my own (regular driveway mechanic w/no welding skills), or should I get a shop to install? What's an average price for install (in SoCal)? What TC springs should I get (currently 1/2 10 bolts F/R) if I want to go for 6" of lift? 4" f/shakle flip rear, 1" ORD zero rate and 1" ORD body; or 6" front/2" rear w/shakle flip? Do I have to drop down the T-case with the 4" lift.