Awhile back, I made these molds for the MTH passenger cars for both the smooth and the corrugated sides so that the cars would be closer to the prototype length. I just bought some more cars and when I finish the T1, I will be using these molds to stretch out come cars. I hope I live to be 120. Somewhere I had posted these, but I have forgotten where, so this is for anyone interested in stretching some cars. Anybody have any questions, fire. Bob.