Try Rally America. If they don't list them on their site, I'd bet they can make them anyway if you call. www.rallyamerica.com/ You might also try Wheels of Steel www.custombuiltsteelwheels.com
how many you need. a good place for plain 14x7 is your local P.O. their AMGeneral postal jeeps, I have 2 the other2 to were bent
I'm really thinking about replacing the wires on my purple coupe with a set of steelies and caps , just thinking out loud. It kinda needs a change of pace.
'57 Imperial 14" wheels will fit ... and if you add the clips, '40-'48 Ford style caps fit. Be sure to check for tierod clearance.