The HKS kit is a great kit. I've put over 5000 miles on mine and have loved every minute of it. Taking an angle grinder to my brand-new Hyper Blue BRZ that only had 4000 miles on it at the time was a profile in courage, to be sure. But it's not so bad once you get going on the install. I think modifying the alternator bracket was probably the most challenging cut I encountered. The rest was pretty straightforward and the advice offered in this thread is sound: take your time, don't rush the install, and you'll be fine. (And be aware that the photos in the install manual are of a RHD vehicle which can throw you off for a bit)
