Some of the dead early MKI.5's used these weird Imprex transistors.

I heard a story some time ago now that a few of the early MKII's did have the (MKI.5) two transistor circuit built into them as a kinda transition from one circuit to the next. Never seen one though and it does see a little odd to me. If I designed a new pedal it would be nuts to then stick in a older circuit but I guess anything is possible.
I was also told that the Colorsound reissues from the 1990's (like the one on eBay) used the two transistor circuit because the pedal they had for reference was one of the transition MKII's with the two tranny circuit?!?
Yet another invalidated rumour was that Mr Page's MKII was one of the 2 transistor transition models, I don't really buy that one though.
~Dave