[IronCanine]

Here ya go...

Engine bay dissection:

1) I believe this to be the correct breather for this truck as a 69 4WD, but not as an automatic. Based on what I can gather only 1/2T automatics came with heat stoves in 69(EDIT: And to be clear, no 69 4WD truck came with an automatic, this is a mod for us).
2) FirstOwner69 was kind enough to share his pre-resto pics of his known original hose routing for A/C and heater hose and we copied it exactly.
3) Pete, I picked up the brass caps and foil Harrison decal from Zip Corvette at your suggestion. I think either the hex(like we used) or the "ribbed" metal caps could be correct.
4) The white plastic plate on the firewall through which the vacuum switch rod passes has sheet metal screws that came from our Atlanta built truck. They were clear zinc and a size larger than every other set I have seen. I became acutely aware of that when I installed them in the 69. I feel very confident that they were original to the 71...but they are a visual tension for me now as I'm used to seeing them smaller and most appear phosphated in pics of other trucks.
5) I love that that prop valve sat in a box for 50 years and now it's doing a job.
6) I usually pick an original truck that I like and copy it for finishes. I reference the 80 mile 1970 a lot. That's why we cleared the top radiator hold downs and clear zinc-ed the hood latch. Even though I have seen different finishes on both.
7) I would prefer for the tower clamp on the upper radiator hose on the engine side be positioned closer to the edge of the hose for esthetics, but that's where the rib is on the metal hose. I haven't seen it discussed, but that radiator pipe does not line up with the radiator and the thermostat housing at all...it's in the neighborhood, but that's about it.
8) On the 69s I think the windshield washer bottle could be on the fender or the core support.
9) I still don't know the rhyme or reason on the red mark on the A/C box. I replicated it with a paint brush and acrylic paint. It seemed like a way they might have done it.
10) The speedometer cable would not work if it was 1/16" shorter...I mean it's tight.
11) I don't know what the breakdown on the 4x4 dipstick is, but I'm not sure it was a thing until 70.
12) I know the battery terminal covers aren't correct, but they clean it up I think. Top post terminals are just an eye sore.

....hopefully I haven't ruined the pics with all these words.