I got the fittings and SS line from extremepsi.com, the 14b and 16g kit is the same and I purchased it for my 14b install. Very easy and straight forward. So either you need to start fresh with the whole kit:
http://www.extremepsi.com/store/cust...cat=336&page=1
or just the AN fitting
http://www.extremepsi.com/store/cust...cat=336&page=1
just make sure you choose "14b, 16g/EVO 16g, 20g" option from the drop down box for the "Turbo Fitting" for the kit, and "Mitsubishi 14b/16g/20g" option from the drop down box for "Model" for the AN fitting
Hope that helps?