Small detail, but why not? I ordered a set of four chain covers for the rear tailgate chains, from Rovers North (made by Exmoor Trim). I also have three out of the four original covers, but they are battered and have holes in them and clearly show their 51 years of existance. The four replacement covers were good quality, but very clearly not the same size as the originals on this particular vehicle, both length and diamater being too big. And so, a quick trip to a local upholsterer, and for $2.50 each, they were re-made the correct size. Not very complicated or expensive!
In this view, the original cover is at top, and next down, one of the new replacements after modification for comparison. Next down shows how much the upholsterer took off the top (they took a chunk off the end, as well, but they didn't give me that piece). At bottom are the others.
The new chain covers on the chains. If the lengths of the new covers had not been shortened, they would have been too long for the chains, in any case, it would appear. Why are the chain covers in two pieces per chain? As far as I know, it's to let any water out that may get inside, once they hang down when the tailgate is up.
Earlier this week, had a look at the Kodiak heater. It has not come through it's half century too well, especially the intake piece (far left). However, it should be salvageable, and it will probably be not to difficult to make the intake part.