[Arran]

I can confirm that the radio that was in the 1954 was built by Philco, some Chrysler products used Motorola built radios but not in these cars. Generally speaking the tubes should be fine, car radios were not used anywhere near as many hours as an AC set in the same era, the ones in the tubes in mine all tested close to brand new, the issue is going to be the paper caps if the set is going to be used for any length of time, age is killing those. My car has the four wheel drum brakes, only the Crown Imperial models got the Ausco-Lambert disk brakes as standard, the limousines also had 12 volt electrics but I'm not sure when that started. The disk brakes don't work like the ones were are used to, they work more like a clutch plate, and are actually self actuating, kind of like the shoes on a brake drum. https://www.web.imperialclub.info/Repair...ambert.htm
 My car has the two speed Powerflyte, I think the late 1953s was the first year, two forward, and one reverse. Also has the power steering, the pump runs off of a shaft coming out of the back of the generator. This was not an unusual arrangement, G.M and Ford cars used similar layout back in the 1950s.
Regards
Arran