Ive had a couple of customs made by them for my old cars a good few years ago now. That was when it was Ascar. The service was excellent, but i had to take one back twice due to it rubbing. It was a bit of a pain in the arse but they sorted it in the end with stiffer mounts.

My brother had one too, and part of the deal was that he could take it back for them to change the tone and volume of it, which was good really. He had it changed twice as it was ridiculously loud.