Read threads on this subject from years back. Interesting, thanks!
Info ... there are still new, in the wrapper, kits available on ebay; someone must have purchased lots of DeeZee stock when they discontinued production of the kits for Tacomas.
More importantly, there were issues with the stock cable binding and wearing with the kit installed. DeeZee resolved this on newer kits by adding a "cable clip". This is barrel shaped rubber clip that snaps onto the stock cable preventing it from wedging between the truck body and the pneumatic cylinder of the kit.
Just installed mine, works great, no cable problems ... wish it were a Toyota option!!