i just installed a pair of pacesetter LTs with emissions fittings and i have the EGR hooked up fine, but my AIR fittings wont fit...so i used a micrometer and measure the inside of my fittings (female end) and it measures to 0.71 in. and then i measure the outside of the fitting on the headers (male end) and it measures to 0.82 in.....obviously im going to need some kind of reducer like this:
http://www.jegs.com/webapp/wcs/store...2562_-1_142213
but i dont understand the "-6 AN" or any other sizes to know which one i need...can any help?!
thanks in advance
o and i do need the AIR fittings bc i live in NJ and need to pass emissions

 

nevermind..problem solved...it was my own dumb mistake...guess i shouldnt keep pluggin away when ur tired and before you know wut ur doing

 

I think it is a -10an fitting. (an -> army/ navy) 37 degree flair. -10 takes a 5/8 hard tube.