Sermis, Duals on this truck. A future yet to be found and bought multifuel will probably get the tires and rims like you are running. I figure a running Gasser is something somewhat rare and deserves not to be modified as much as I would like. I hear "I have never even seen a Gasser" a lot. So, this one gets all new wires with Packard ends and a 60 Amp alternator. That is about all the modifications I plan for this truck besides the 11.00 tires and drop side bed. But, a Gasser bed is not going to be cost effective to find/buy/redo and most people won't know the difference anyway. Yes, your bed we moved the other day would be closer to correct, but right now, I want to finish and drive the darn thing. My bed is closer to that objective than yours.
RJ, nothing. When I did the M715, I put regular automotive primer down on bare metal and then the Gillespie paint over that on the first few parts. Chips and flakes were caused by the primer coming off. I didn't have the funds to buy the red oxide primer at the time and just painted the rest of it paint to metal. None of that has come off yet without a bigger/harder object hitting it first. Such as a M35 rim dropped onto the tailgate lip. Even that takes a lot less paint off than you would think. We have humidity here, but nothing like the swamp you are surrounded by so rust might make things different for you.
I did figure out that if the metal has growing rust on it when I clean it bare, the rust will grow back with the paint on top. But, bare, shiny metal painted within a day or two with just paint on top seems to last as long as I let the paint stay there without abusing it. Your previously undercoated areas would probably be fine if painted the day after you removed the undercoat. But, the best thing to do is bare metal, Ospho/ POR-12, red oxide primer and then paint.
Joe, I stripped the frame a lot more than I planned. I am not building a show truck but a driver I plan to use as much as I can afford the fuel to. The frame got painted because I had to take the truck this far down to replace the cabs. Kind of a "while I have it apart, I might as well paint it" thing. But, I had to stop somewhere. I sat and looked at it for a while yesterday morning thinking "I can get the engine/transmission out with about 20 bolts right now. That would really make the inside frame look good." Then reality hit. I need my shop space for stuff other than M35 frame storage.
Now, about the lift. I used the winch to pick up the stripped cab last week. The winch was about 3 feet from a truss. I had to move the winch so it would line up over the cab on the truck. You can't tell in the pictures, but I have about 3 feet of clearance front and rear on the frame and no more. The frame is in the only spot it can be. This put the winch about 10 feet from the nearest truss. Yes, the replacement cab is at least 200-400 pounds lighter. But, with the steering column out. The frame is going to be very difficult to move. Using the overhead winch will require the frame being moved both out and in with a doubtfull safe working result on the winch after I move the truck. The engine hoist however can pick up the cab where it is and put it over the frame without moving anything.
I have been thinking about it a lot since last Friday if you can't tell. Then I screwed up during my paint fest last night. I didn't even think about painting the battery box and tool box. Yes, they can be installed after the cab. But, they are a lot easier to install without the cab in the way. So, that leaves today with figuring out which of my 3 possible battery compartments and tool boxes or combinations of I want to use, sanding them down and then painting the underside of them. I also need to find an open auto parts store to buy metal brake line at so I can make a new tank to front frame fuel line. The weather is probably going to keep me from painting the top sides if I get that far today in the evening Wednesday or even the rest of the week. That pushes me back to the heat of the day Saturday for final painting. So, maybe Sunday afternoon I will be able to mount the boxes and try to mount the cab.