It's possible that it would all fit, but this is one of the units that I have to see inside to determine what will fit. Pretty sure a smoke unit can be installed, it might be the LC+ steam unit, which does pretty good smoke, but something. The wild card is if there's enough room somewhere around the motor and flywheel to install the Chuff-Generator for the four-chuffs, as well as space for the Super-Chuffer II. The good thing is the Super-Chuffer II is smaller than the original, so there's more chance it will fit.
I have put all of this stuff in a semi-scale TMCC K-Line Berkshire, that should be a similar sized unit.
