Finally had time, courage and atmospheric conditions to fit the brace on my GT, took me about an hour start to finish but I'm sure it could have been fitted quicker but I'm happy, took a couple of photos which I'll upload later..
Fitting was OK, as per advice I removed the ABS sensor plastic mount thing completley and I'll cable-tie it off later.. Once I'd removed the nuts the placing the thing on the top was a right faff and I scraped quite a lot of paint from the "red" end. I was fairly convinced that it wasn't going to fit and I was going to have to abandon it for the 3rd time but with much wiggling it went over all 6 bolts and I could tighten it up, doing each one a bit a time until it was nearly flush then switched to the torque wrench (thanks again Shiny_Car for the settings!) I tightened until it was flush and the wrench did it's clicky thing..
The only warning I have is that it could be really easy to strip a large chunk of thread from one of the bolts when trying to push the brace down, somehow I got away with it but I suspect that it would be really easy to end up with a ruined bolt..
Much to my surprise it didn't foul the bonnet or anything else (apart from the afformentioned ABS cable) and the bonnet closed OK..
Now the driving experience, took it for a short blast down the motorway then a local dual carriageway with lots of fast bends on it, and it was great!
The steering was definatly more direct and I could feel where the front wheels were going and put it exactly were I needed on the road. Furthermore I could FEEL the overinflation of my tyres on the greasy road. Best bit was that I happened upon an RS4 also out for a blast for apparently the sake of it..Needless to say with twice the horsepower AND four wheel drive I stood no chance, but I the little alfa certainly wasn't embarresed. Round the roadabouts at either end of the dual carrigeway he certainly didn't have anything on me (I'm guessing that the trick-4WD would send his power to the front anyway?)
The only question I had was that I wasn't sure how much, if anything to tighen the bolts that attached the bar to the plate (rather than the suspension mount itself). I've left it "tight" but I suspect that it could be tighter but didn't want to risk stripping anything..
Verdict: Very Happy
My first mod and even for a mechanical no-hoper such as myself very doable with a decent socket set, torque wrench and some pliers. No negative effects so far, but if I do discover something you know where I'll be coming first!
Thanks to everyone on the forum for the advice and encourgement!