ive installed a couple of thier kits. its really a hit or miss situation. sometimes there great and sometimes the quality just sucks ass. check here, i dont know what ur budget is but ur going to get what u pay for heres my boys site. u might know him as oinkaodeoink aka mike www.turbochargedinnovation.com
i was wondering the same thing.ive heard alot of people say their stuff is garbage but a buddy of mine has a turbo header of theirs (not on a mustang though) and i was very impressed w/ the quality,fitment,and price.