Lots and lots of people have had a lot of success with these kits though!
I really wanted to get a Megan racing kit out of the US, but the American guys wouldn't sell to me because they had an Australian distributor and the Australian distributor would sell me any because he wanted to sell me Alcons instead.
These would have bolted up to my car, but noooo he claimed he had to machine up this that and the other thing to make it fit, lies
http://www.enjukuracing.com/products/Megan-Racing-Front-Big-Brake-Kit-%252d-Nissan-240sx-5%252dLug.html