Your viggen has the hoses you'll need. The NG's have some difficulty due to the double pass IC but cars that come staock with the viggen IC will connect perfectly. No worries.BlinD said:For someone whos done the install. Is all the piping the right size compaired to the stock piping? I remember reading somewhere that the intercooler piping was 2.5in and the stock hoses were 2.3 or something. If this is the case looks like I'll be fabbing some stainless piping with silicone connectors for my piping. :roll: I'm hesistant to do so because of heat transfer.