I heard about their turbo kit coming out. Very different from the HPF kit that uses cast manifold if I am not mistaken, FSR's manifold should be beneficial if not to say the least over a cast manifold.
I do have my car serviced by FSR and I would be no where on my build if it weren't for them. Ian like everyone else has said has a gift with fabrication and tuning. Eric as well has a gift for electrical and can diagnose anything you throw at him of it has to deal with electrical. If you ask about FSR in the supra community you will hear nothing but great reviews. For anyone who wants to slap a turbo on their e46 why not FSR who have extensive knowledge with turbo applications (MKIV Supras) and know what they're doing with no cut corners.
You honestly won't be dissapointed with their customer service and quality work they do. Their new manifold will not dissapoint...