you can buy mine, $20. Never used, never installed. Didnt want to risk running it with the stock boost gauge so never got around to installing it.
Couldnt be a more simplistic design, hose goes on the 2 ends, turn the knob for more or less psi and lock it on with the bolt
This is the one off ebay aswell, he charges $29.90 + $7.50 from memory so just give me your address and next time im down in Canberra i'll leave it in your mailbox
or if your want a brand new one
http://cgi.ebay.com.au/Turbotech-manual-tu...1QQcmdZViewItem