i highly doubt its going to narrow the rear track 8mm and a 120 rear wheal could easily be re-spaced to 130. i love crazy weird stuff as much as the next guy, there is just such an easy option for this.
It sounds like the track ends are going to be bolted on to the inside of the road dropouts?
That would reduce the spacing from 130 to (130 - (width of track ends)).
If the track ends are 4mm thick each then that is 122mm... Would be nice if they were 5mm thick...
i highly doubt its going to narrow the rear track 8mm and a 120 rear wheal could easily be re-spaced to 130. i love crazy weird stuff as much as the next guy, there is just such an easy option for this.