Not true. 420 SL's were produced from 1985 to 1989. Euro market only. I am sure the R/C 107 guys will tell you I am not mistaken. Same M116, KE Jet, 9.0:1, etc as we are all familiar with from the 4.2, just in an R107. I don't have production numbers.The reason that you've never seen one before is because Mercedes never made it. Someone put a 420 engine in a 560SL in this case, (or just made their own emblem for some strange reason). Big whoop.