Check out these ones. Makes heaps of sense to me and same price as i paid through MMS. Aparently without the boost spike problem either.
Would have gone this way if I had have known about them before I got mine.
If you do go a MMS get the resonator first up. Was to loud for me before I had 1 put in. Come to think of it MSengineering is the cost of a resonator cheaper!!!!
http://www.msengineering.com.au/
http://www.rexnet.com.au/forum/index...opic=61643&hl=