Thanks for all the good information fellas. I wonder if Hedgehog is correct about the cab possibly not actually being a 51. The previous owner did 75% of the restoration, and it was already painted awfully nicely, with the antenna hole on the passenger side. I checked caerefully on the drivers side under the dash and it doesn't look like there was ever a hole there...hmmm. The truck was painted four years ago and I'm not sure I'm up to moving the antenna and matching the color and all, so I'll probably wind up using the existing hole and getting either a power antenna or one of those cheapo ones that pivot. Bummer, but cruising on a pretty day, I'm sure it'll be the last thing on my mind! Thanks again!
