[DanEC]

At least in my experience with ERA, most "upgrades" are something that you just need to take up on a person-to-person basis with ERA. There are certain listed, upgraded brake packages, relocated battery, roll bar, exhaust, tail light, hood scoop type, leather, wool carpets, coil/overs, top, sidecurtains, etc - type options/upgrades. But there are many, many things they do on an individual custom basis. I think they have done a few original spare tire tray conversions on 427 cars but it isn't something they advertise that I know of. Peter used to have a store of glove box 2-prong knobs for 427 street cars he will part with for a price if asked. They fit a street roadster surface mount gas cap for my car and fabricated a storage pocket across the back behind my seats, similar to street cars.

If you have an idea on what you want, talk to them and they probably can do it for you.