Apologies for the ridonculous necropost, but I thought I'd stick my head in here. Having recently finished a five year hitch in the Marines as a CH-53E airframe mech, I just couldn't stay away from a thread about my beloved $h!tters. Regrettably, though, Adam, I don't have any pictures for you. Photography was never encouraged when we were doing maintenance, because some of the other squadrons' aircraft had classified equipment, and also because phones and cameras and such were FOD, and as such weren't supposed to be out on the line. But I can tell you that depending on how far you decide to go with such a project, you could be scratch-building and detailing that model for ten years, easily.
You're basically describing a maintenance procedure called a 30 Day No Fly. That means that every door, work platform, and access panel on the aircraft is opened and completely cleaned out and defodded, and inspected by the QA shop. All the tail driveshaft panels come off, the panels under the transition section (tail boom) come off, all the panels came off of the tail pylon (the thousand bolt panel, the million bolt panel, a third one whose name I forget, the two grilles over the intermediate gearbox, the "taco shell" over the #7 tail driveshaft, and the gladiator cage and squirrel cages around the tail gearbox), and I'm pretty sure we even had to pull the floorboards out of the cargo compartment (which also required pulling out the cargo rollers, dual-point cargo hook door seals, cargo winch, and cargo winch mount. and then once you'd gotten all that off of the bird, and QA has done their thing, you have to put it all back on! In short, what a 30 Day No Fly boils down to is a stupendous pain in the a$$ for the maintenance department, and a scratchbuilder's dream/nightmare. I do wish you luck, though, and look forward to seeing the result.
Again, sorry for the necropost, and I did very much enjoy everyone's pictures of my favorite helo.
BTW, I've just finished building a Revell 1/72nd scale Pave Low, have a second one in the mail, as well as a Revell CH-53E in progress (found it on Ebay, just got it delivered today. I've emailed Creighton at MAWDecals about the possibility of getting decals for my old squadron), and then I've got an Italeri MH-53E and an Italeri MH-53J (which will be built as a CH-53D if I can get decals for it from Creighton) waiting on the shelves. Basically, I'm doing a one-man $h!tter group-build. Pics to follow when and if I finish them all.