As noted in another thread, I am trying to convert a cheap Bachmann 2-6-0 into a Heywood-inspired Gn15' 0-6-0, with the option for a tender with a seat for a 1:12 scale engineer to represent a half-scale 7.5" gauge loco in 1:12 scale (to confuse matters further, I may also use it as a 1:18n1 loco with either a different tender or an interchanging seat).
Currently trying to decide whether to build the loco itself as a side tank 0-6-0T, with an extended back footplate for the 1:24 scale engineer, or as a non-tank loco with a tender (in which case I may want to leave off the side "deck" ahead of the spectacle plate, as it looks odd at a different height than the tender deck). Of course, running a side-tank loco with a tender in 1:12 scale will also look a bit odd. The side tank loco may also require a dedicated tailing car attached by a drawbar, as the overhang is likely to be more than the couplers can accommodate.