I've been looking for someone that has tried this, and had no luck, so I though I would post about it.
I bought these Signal Stat 2751 Pedestal lights a year and a half ago because they looked like they would fit our 1972 Sovereign
. I brought them hom and I confirmed that they do indeed fit, but they are bare wire ends, and I couldn't get the cans out at the time to remove the bulb sockets. so instead I gutted the trailer.
I found them on the shelf again today and used one for a temporary light to haul my frame to the powder coat, and I was amazed at how much better the light was. I've also been looking for a replacement for the back up lights to match, and had been unsuccessful until now. I've found what looks to be a close match in a clear lense and white light. they say interior only, but they are built the same as the tail lights in the same series. plus they come with a 1156 bulb base to plug in directly. They are a bit more expensive though. I think at the time i paid $32 each for the pedestal lights, and these clear ones I've found for $34 each. I don't know for sure the clear ones fit, but they look just like the signal stat ones I know fit. I think I'm going to order them. I like them because they are entirely potted in back, and if I install them with a gasket, they should seal as well as the original lenses.