I just sent you a PM, please check it to contact me and I can walk you through how I modified my radiator to fit. It wasn't even as much work as I remembered.

I purchased the Dodge Champion Radiator John Morningstar recommended. Beautiful piece of work for $300. Ordered it on Monday, arrived on my doorstep Friday. Very happy.

Sure would be nice to find an equally suitable new 20 gallon gas tank for $300--$400...

That's the one I got. Needs to be trimmed a smidge and a couple of straps made up per John in NM. He said he had to adapt the hoses, but others on here have said no problem. I haven't tried fitting them yet.

Got everything installed by using the cut-offs to make brackets like the original radiator had so as to maintain some fore and aft adjustment. Had to make a reducer for the water pump inlet, but all went together fairly easily. 

Let it sit and idle for about a half hour and no puddles anywhere, so I call that a win, though I'm not sure about the neighbors, who got to deal with the smoke and aroma of ancient gas being burned off. 
Now that we are running, I find that the clutch is stuck.  The adventure continues.

I believe there are several threads on this forum about getting stuck clutches to release.  Glad you got everything together and it's running!!

Darren, I hope you drained the old gas and put new gas in the tank before you started it. The old gas will deposit varnish on the valve stems, which will then cause the valves to stick in the guides after you shit it down. On a flathead engine, at least the pistons won’t hit the valves!  

There wasn't really any gas to speak of. Mostly sticky black goo in the fuel outlet line, which largely ended up on my face under pressure. I flushed that part of the line with laquer thinner and a coat hanger then poured 10 gallons of new non-ethanol in the tank. I am reasonably confident that what little was there was diluted and should pose no further problems. Famous last words...

In that case, you should be fine.  I mentioned it because I've had that experience, including the pistons hitting the valves, on a Porsche.  Fortunately, it didn't do any damage, but I know of several cases where it did, and several of the old car restorers on TV shows have warned about not starting a car with old gas.  

What bottom hose did you use? I cannot find a bottom hose to go from 1-5/8" to 1-3/4". I tried making one with a coupling and its leaking terrible.

If anyone reads this and needs to find the proper bottom radiator hose for a Dodge radiator, use a Napa # NBH7694 hose and a NBH901 hose reducer on the water pump, 1.75 to 1.5". Trim to length the short end of the "L" to fit the bottom outlet on the radiator and miss the motor mount.

We have the correct bolt in radiator for your car, no need to change hoses and/or adapters needed.
www.wrphet.com

We have the correct bolt in radiator for your car, no need to change hoses and/or adapters needed.
www.wrphet.com