Hi Owen,
First step if you haven't done so is get a FSM ( Factory service manual) and parts manual. A google search should find you some to download for free. A bench top copy which is very handy in the shop can usually be found on E- bay.
The melted bulk head is due to the ammeter connection. On these cars the alternator power goes through your bulkhead connector through the ammeter and powers everything. There are some discussions on this board on how to by pass the ammeter which could prevent this in the future. Also using dielectric grease and clean connectors helps this. New bulkhead connectors are available on E-bay and are your best option if yours is melted. As for the wires I went through each individually replacing brittle or cracked wires and connectors. It is time consuming, but so is chasing electrical gremlins later. The proper wire wrap ( looks like black electrical tape but in non adhesive) is available on Amazon or Year One (look under any Mopar Catalog, it may be more expensive but right), Also get a roll of the black cloth style harness tape. If you are going to re- do your harness lay it out on a peg board or something that can string it out. Take lots of pictures and mark any pigtails coming out of the harness so that when you re- wrap they are in the proper place.
The front Stub Frame is held on by 8 bolts plus the transmission support. A rotisserie restoration is very expensive if you don't have the body work skills ( I didn't). What ever some one quotes plan on doubling or tripling it. If your floors are good and you only need fender repair you may be better off leaving the stub frame on.
In 68 the rear window did not use a gasket but sealed in with black goo. I believe it was the same on 67, but not 100% sure. A parts manual and FSM would verify the seal type. If it a black goo seal you can take thin piano wire stick it through the goo and have a helper saw around the window to remove the goo. Full disclosure, I did not take mine out. The restoration shop that put it on the rotisserie removed it.
Anodized trim can be a life time search. It is model specific and different with in the models and one year only. Find the proper part number and start doing searches. They come around once in a while, but expect to pay $400 - $800 for a NOS set. Partsvoice.com is a good search tool for NOS items. If you still have your trim, it may be worth while seeing if you can restore it. You do have to remove the anodizing first.