I subscribed to RCCA bitd and saw an ad for the Track Master Equalizer in early 1990. I recall going to my LHS and placing an order for the direct drive non-SS version because it was less expensive and I wanted to build it. I sold my RC10 to a buddy who wanted a competitive dirt oval car which helped pay for the Equalizer. Back then we were making silicone capped tires since the tracks were typically grippy and very smooth. I ran the Equalizer at the 1991 Chief Auto Parts Autorama indoor championships where Barry Raborn, Randy Minchu, and a number of other skilled racers attended. I ended up 3rd in A-main (found the trophy in Mom's attic) and had a blast over the weekend. The following year I recall trading my Equalizer to the guy that had my dirt oval RC10 since I was going to mod it for an off-road config.
Over the years I have seen a few Equalizer's for sale. Some were missing a few original parts, and obviously those parts are hard to find. The SS version is a real gem, and there were less than 100 of those that were sold. Recently I stumbled on a nib direct drive Pro kit with the optional belt drive kit. Kit is complete with instructions and all of the other marketing materials. It came with a few other interesting tidbits as well. The collector in me says don't build it, but the hobbyist side disagrees. Not sure what I will do for now, but rest assured this will sit proudly on the shelf.
This is the final SS that was kitted. Bob is not sure if they had above #082, but he's confident it was less than 100.