actually we found it at work just collecting dust! (we work at an independent music store that's been open 30+ years so you can imagine their are a lot of cool pieces hiding around waiting to be found)....
They only made them for THREE years! '84-'87. All it is is two of the exact RAT circuit taken from the pedal of the era, and made to fit a 1U rack unit. They're actually quite rare and getting th footswitch along with it is even rarer (as without the footswitch, there is no way of engaging or disengaging either of the RATs....aside from DIY'ing a footswitch...)
I can't wait to test it, I'll be sure to post clips! Never messed with a vintage RAT before.