This idea gets better and better...
There are a bunch of things that aren't the same between the two but...
Tada! The elusive Pennsy R2 (sort of)
My Northern has a decoder, but at present it's taped to the top of the frame.
Hey, I just remembered I already bought a Berkshire tender on E-Bay maybe a year ago. It's like I had an R2 kit laying around in the garage...
Doesn't the PRR tender have eight wheel trucks? Why not use those trucks? I'm assuming the tender needs to be lengthened (and the doghouse added).
Frank