That was my reasoning for going the PTO route as well, even tho it'll cost me ~2x what the 8274 set me back for th e90. Reliability, reliability, speed and simplicity. It does come complete with shafting for the 110 as well by the way.
When you say you use the top fairhead, do you mean the fairlead is bolted to the top mounting bolts for the winch in the ARB bar or something else completely?
Also, do you have any photos that show more of the bull bar (I'm having a bit of difficulty deciphering some of the detailed photos) - probably because I haven't got the PTO setup to look at, nor have I had a good look at the ARB winch bar yet. Front viewand top view of the bar would be very useful if you have any.
Cheers
Bojan

