Okay. Soon as I light off the big computer. The Lobaugh Berk is a nice springboard for various prototypes, including the MoPac/IGN, as well as the above SP variant.
Then I got creative, with frame extensions, modified boilers for Mikados, substitute frames for Scale Craft boilers, and even a PRR "Hippo." And a huge SP MC-6 that did not make the Cab Forward thread due to lack of interest.