The details for the Racer on the left are still a bit sketchy. Hopefully, readers can provide some insight. I recall a 1.20 Four Stroke Racer built by SAM 39 in the late 1980s. It was featured in the Plug Sparks column of Model Builder Magazine but I haven't been able to locate the issue. For information on the Red-White & Blue Racer on the right: click here.