Just fitted mine, bought from SGS as per last post. Needed to dremmel the old OEM ball joint socket (alum) but it was easy enough tbh and there are guides on the net - only took 10 mins. Fit and look is spot on. I had my struts gassed to +15% of OEM, which as OEM are set at 400N, equates to 460N. I'm told these struts are good to 1200N so 460N is not going to cause an problems. I read on the yank site that people were buying them at +30% and they were too powerfull and hitting the upper bump stops a bit too hard, hence i went for +15%, midway. SGS can add more gas to these if necessary, you can return them in the post and for free they will adjust them, a good service i felt.
I thought i would update the post as i needed to do a reasonable amount of research and still ended up taking a punt at the pressure, but it turned out great