But I wanna Y6B! :-\
Wes,
Been done-long ago by Rowa, and RivaRossi. Con-Cor might still have some shells-you could drop one on the LL mechanism
different lead trucks, different tender .... for starters
Rivarossi also did them in HO ages ago. Didn't stop new ones from coming out recently.
From my favorite would be N scale powerhouse: