Yeah no worries.
I plugged all ports/lines/openings, bagged and taped all the wiring and stuffed it into the fenders, then hit it with a pressure washer. That only took the big chunks off, so I used scrubbers and a bucket of dawn dish soap and scrubbed the inner fenders and firewall. The frame rails and front diff were coated in decades of oil, so I used oven cleaner on those. That made the biggest difference in the process. I'm sure that stuff is terrible, but it definitely works.
I tried a variety of degreasers, and none of them did much to cut it other than the oven cleaner. Careful on anything aluminum though.
After everything dried, I used rust dissolver on the inevitable passenger inner fender where the a battery leaked along the way before
i owned the truck.
Then I hit all painted surfaces with a quick scrub (320 grit I think) and after wiping with tac cloth sprayed it with white primer and duplicolor color match paint which is not even close to a match, unfortunately. It was BTY1578. It's not terrible, but I certainly wouldn't do any exterior touch ups with it.
For the frame (after welding the new motor mounts on), I used
POR15 brush-on in the chassis black color. It is a 3 stage process with cleaner/degreaser, metal prep, and the actual paint. The POR15 is "UV sensitive," so I then top coated it with a can of their spray top coat. Like
@c2dfj45 mentions in
his thread, it is great paint and goes on really well for a rattle can. I also used it on my cross member, steering linkage, front diff, shifter linkage, and PS box after I rebuilt it. I ran out, but am trying to find another can for remaining misc parts like my air box and brackets. Seems to be sold out everywhere right now.
After the por15 and top coat dried I tapped all of the threaded holes and captured nuts, and started reassembly on the firewall and frame rails.
I think that's it. It took me a couple of days, but definitely worth it. Hope this helps.
Inner fender rust dissolver before and after:
View attachment 3172195
View attachment 3172196