I have a Johnex which I built myself. I picked up the kit in late 1999 and had it on the road in the spring of 2001. Except for a couple of very minor problems at the beginning, I have had 3 summers of great driving with the car now.
DD was a designation given to the live axle cars by HOC and it was for Daily Driver ( I always called it Daily Dragster
) EQ was also a HOC designation and it was for Exqusite Quality, or something like that.
The frames and suspension components for the Johnex cars were made by Canada Stock Car, CSC, who build asphalt stock cars. CSC also produced the IRS for the EQ. This unit was based on a Ford 9" with many of the other parts from Bicknell Racing.
According to John Leliever (the original owner of Johnex) the rear suspension on the live axle car was a modified DeDion setup. Mike has described it quite well. The rear end is fully adjustable and can be set up just about any way you want it. I made a couple of passes this summer with slicks and the rear suspension worked great, just like it was built for drag racing.
I am not sure if Kobra Motors are still in business, or not. I went past the building a couple of times in the past few months and it is closed up. If they are still in business, they must have moved to another location.
Wayne