When I started working with Palatov the D1 was actually the D4PPS having returned a few months earlier from a class win at the Pikes Peak International Hill Climb.  The suspension, engine and all associated systems were attached to the D4PPS chassis and one of my first projects was to disassemble the D4PPS and reassemble the D1.  There has still been many learning oppertunities and with ownership of this vehicle changing hands the future may yet hold opportunities to innovate and improve its design.  

The D2 is a high performance track day car that is also street legal.  I have been involved with the development and production of this car from the beginning.

The D4 Turbo ended up being almost a complete redesign of the D4.  The only thing that is similar between this D4 and previous D4s is the suspension and chassis.