I rebuilt my F-85 Cutlass and Rambler Classic fuel pumps using the kits from Then & Now Automotive. These are very complete kits with pretty good instructions. So for no problems with either car. I did the work 3 or 4 years ago. Also, I rebuilt the carburetors on both cars using Kits from Kanter Auto Products. The kits I used are resistant to today’s fuels. I haven’t had any trouble with these either.
I agree with jensenracing77. Run the engines when you can in the winter. I have a couple of motorcycles that I completely drain the fuel systems on and make sure they’re completely dry. It’s much easier to do on a motorcycle so I put Stabil in the cars and run them every now and then. I haven’t had any fuel related problems doing this.