Truck -- 1996 1 ton 4x4 CTD. 260,xxx miles. New NV4500, SB clutch, SB master/salve cylinder setup. Headgasket went south. I will probably be doing some major engine work -- I figure the rest of the drivetrain is new, might as well make the motor like new. Here is what I want: RELIABILITY FIRST!!! Then be able to pull 15 to 17 thousand pounds up hill all day long at 70 mph while not pushing high EGT's :. What mods or work should be of first concern? This will probably be an all out build, so I want to get it right the first time. This will never never never be a sled pulling truck -- just a super daily driver with lots of ability. Currently looking at a moderate to major motor rebuild with a new turbo, ATS exhaust manifold, keeping 100 horse injectors, 4GSK, and fire-ringing it. Again -- RELIABILITY is my goal, not horsepower. I do not want to upgrade SB clutch. What turbo should I look for, what head studs to use, any complete motor rebuild kits, other things to consider, etc? Thanks for any input.