I think the 62 model year would already have started by October of 61. I think the plant shutdowns for model changeover were typically in August. Your paint looks good. A little orange peel will make is look more authentic.
A vendor named Booster Dewey can rebuild you brake booster I believe. Hemmings Motor News will have lists of vendors who can perform the services you seek. Good luck with it. Joe
Just search on Ebay. There appear to be lots of small manufacturers and many of them are priced similarly at less than $100 complete with casters. I bought two a few years ago from a maker in Missouri but I cannot recall his name, for my AMC V8 engines. Or google engine cradles and search on images for one that looks good to you. Joe
Anywhere from $500 to $2500 depending on how bad you want it. If you can see yourself in it, running and driving, make the seller an offer. Cars are personal, unless you are a dealer. Joe
They are looking good but I was in my local PPG paint and body supplies store a few years ago while in the midst of patching the rear quarters on a Rambler. I told the guy at the counter that I was trying to block sand epoxy primer on the repair (PPG DPLF 50 to be exact) and the guy at the counter and two other customers in the store said almost in unison: You are not supposed to block sand epoxy primer. So what sandpaper are you using? Wet sanding?
Metro Molded parts has a pretty extensive catalog of various types of weatherstripping, with many of the profiles shown along with dimensions. You can order a printed catalog from their website or browse profiles online. Joe
If you google, The AMC Forum you can join that group. There are several people on the forum who will gladly help answer your questons. I do have several older Ramblers but I do not have one with the automatic transmission feature you describe. Joe