here the datasheet of an R46 all you need to do is get the measurements of the front of the train, dont worry about the rest of it. the front of the M2 and M3 is similar to the R46
*Please excuse this thread bump* Hello susanaes! Just a thought, try to download the R46 (not modified) and see if you can import that to sketchup. The R46 is the closest thing I know of .