B and amp;M Shortshift, and the solid mounts just mean alot more noise transfer in the car. My car is actually awesome on the road. I left it on full-hard the other day by mistake, and found it far better than when on full soft (where it sort of felt strange).
Awesome grip and cornering - scares other cars sensless! Doesn't have the suppleness for nasty b road flights, but is great on A-roads and loves roundabouts!
Co-ordsport reckoned their box needing stripping/inspecting every rally (!) and translated that to every 3 open pit trackdays. I don't think there is too much difference between racing and track days for me. Racing means 10 or 20 laps flat out. Open pit track days mean as many as 80 laps - so is harder on the car than racing. I just can't afford something that needs that much effort. All the stuff done to the car so far means that it is far more resilient to track days. Tyres last 3 or 4 days, brake pads the same, which actually means in the long run I have lower running costs (ok, a moot point with the money spent

)
I would love the dog box, but not the cost of living with it.
Just to get and fit the box is £10k!!! Add £1500 per year. I may as well change the standard box once a year!
Also, I think the problem with my box was the preload issue that everyone is facing, and not anything to do with the torque/power. The box should handle 400-450lb/ft with no problem.
The Gemini dog kit only handles 450NM. The Hewland box I think is ok to about 550NM, but could not get confirmation. Don't know about the new Quaife kit, but bet it isn't much better.
Just to make you laugh - the Xtrac Group A sequential box, with diffs, carbon clutch, prop etc. is a cool £100k from Co-ordsport!!!