[Graham]

Graham, Mosler MT900 isn't GT3 homologated, might be wise to take that off the list rather than see a grid full of them...just my own personal opinion of course.

I thought it was, but a good excuse maybe to leave it out. 
In principle I don't like to avoid the "elephant in the room slot cars" and in general I have allowed these cars as I try to make the theme Events more inclusive so that they have some genuine slot car competition. And to be honest some of the newer NSR GT3 cars are wide enough like the AMG Mercedes to give the Mosler a run for its money.