You can also go with a set of the 15 x 7 steel wheels off a mid 80s 5th Ave or the 15 x 6 off the 88-90 Dakota, or nearly any 73 & newer Mopar disc brake wheels. If your running the 50s dog dish hubcaps, they probably won't fit your new steel wheels. You could probably go cheap and slide some wheel spacers between the current wheels and the rotors and probably gain the clearance you need. (If I wasn't suppose to say that, just forget I wrote it. LOL!)
Of course, if your looking to change the image of your truck, this is a great excuse to buy new aftermarket wheels.
Gene