TX WTB class 3 receiver hitch

[WIDESIDE72]

I am looking for a class 3 receiver hitch. Here is the twist, though. Right now I have a 70 Longhorn with rear leaf springs. I will be using the truck as is until I get time to swap the cab front clip and engine onto a swb frame with coil springs and a sport bumper. I see some listing state "leaf spring equipped" and some say "coil spring equipped". Does anyone know of one that will fit either? Also, I would like to find a used one local or in the DFW, TX area due to shipping. Otherwise I will probably buy one from a local parts house.