It's correct on the 6 bolt mains. Several folks have commented that much of the engine/accesories looked amazingly like know GM parts, just larger/smaller and harder to source. (Might of has something to do with GM being a majority stake holder in Isuzu since the late 80's.)

As for the technical expertise, I've talked with many people concerning have a serious off-roader but still being street legal (for inclimate weather that routinely occurs here). About a 6" lift is all I would need to clear the 37" tires. I'm having a dedicated 4x4 shop do the install for me. John's 4x4 and More in Billings, MO. I just don't have the equipment in my arsenal to tackle something this extravagant. Though I do perform this tear-down with hand tools and a hoist. John has been in the business for many years so I am deferring to his expertise to make the driveline compatible and STOUT. John has moved to tube chassis for his competition rig but is still the reigning authority around these parts for building a 4x4 (the other shops will install lift kits and sell you parts, but that is about it). Lots of people are running the 5.3L with a Turbo 400 around these parts (fuel economy not so much of an issue since it won't be a daily driver - until winter.) The fit is going to be tight and might require and inch or two stretch on the front.

Although his shop has 3 tube chassis and 1 Jeep ahead of mine, I'm on the books for the last week of this month. No promises on how long the build will take but I've been welcomed to come by and take pictures if I want. Not going to pass up that offer.