Carrera 2 4-cam engine, built on early un-numbered factory Carrera 2 case with late 692 casting. Set up with 587/3 build Spec.   904 46mm IDM sand cast carbs.  Big 12.24mm duration 904 spec intake cam,  big 2 Dot 904 exhaust cam. Good compression and leak down numbers: 1. 185 /2% 2. 180 /2% 3. 180 /2% 4. 170 /2%.   Just tuned and serviced on test stand at SST by Jeff Adams.  Runs well.  $235,000.