Thanks Bill.
Friend also gave me his ratty old chrome bundts with decent tires. Two are pretty worn, other two have a good amount of life left. At least all are the same size (205/70R14), and none have a DOT date code from 2003 (like my old ones had).
I mounted them myself during lunch today. Probably lost about 10 lbs of water weight because it's so hot out in the shop.