I used their kit about 13 years ago. I traded the front clip off my parts car to Brian(owner at the time) for the kit. It worked well for me. In fact, Mychailo (mbtoloczko) came down and test drove my car and said it drove better than some of the conversions that they did. :O
I guess you'll have to decide if that's an endorsement or not
. I imagine they've polished up their practice over the years. I just got a stage 1 ecutune chip from them last month. They seem pretty good to deal with. But their labor cost for the conversion sure isn't cheap.