i don't know anyone specific, but i do know that it's any recirculating heater. Those heater types were not on the firewall in the engine bay, the heater box was under the dash in the cab. So, any truck with them in it, will have heater delete plates for the firewall, or possibly any truck in a warmer climate.
I actually have 2 spares if you are interested. It's also what i have on my current truck, as it works great, even in the winter and is a cleaner looking firewall!
215-208-2496 and i can text you some pics
