trinituner.com

Anyone knows where i can get this locally, or has anyone DIY fabricated for themselves?

http://www.billetracecraft.com.au/

http://www.piranhaoffroad.com.au/index. ... ather-kits

ok - stupid question - apart from the benefit to installing this, is there any drawbacks?

none, if its done properly. just do your regular inspection on the hose and filters. Personally after a while i wount trust the stock valves.