Currently I have the .20, an old silver .40 with the crankshaft sticking out through the prop driver and a stud screwed into it, a 25 converted to Diesel, a red .53 converted to Diesel, the presentation model .53 like Martins, a Q 40, a .40 Diesel, a Q 72 and a red 1.50 that I would like to convert to Diesel.