Lego 60423 Downtown Streetcar MOD

Hey everyone, Definitely late to the party on this one, but figured id show my own version of the set that I modified. (ignore the lack of wheels studio was annoying) I made it 8 wide, added 2 extra carriages, and replaced the coupling with the technic joint 61903 as i thought it helped close the gap but also provided enough turning radius. In a completely original move (sarcasm) I think im going to "black out" the middle carriage for motorization capability, but if anyone has ideas on ways...