I have them on, they are 1-3/4" I measured them because I had tricked myself into thinking I got 1-7/8"
Are you planning on coating them? If you get any snow and its your DD I would suggest it. 400 series stainless will mostl likely not rust through like aluminized or mild steel, but it will probably get surface oxidization if not treated.
I got mine ceramic coated for $200 I think it is worth it.
Bo - these really made an improvement, I got 20+ whp more @ 1500 rpm vs. without. Sound great at startup, and the interior note even at the loudest is not annoying at all (to me anyhow) - really good set for the price IMO.
'08 GT sport/premium, tints 20/35, 18" TSW nogaros w/ bridgestone blizzak winter, 19" sport oem w/ hankook evo summer, Philips crystalvision bulbs, debadged, Vararam OTR, JBA 1-3/4" LT's, ported TB, MF axlebacks, MF X-pipe, DBA-powerslot brakes, russel SS lines, hawk ceramic pads, GXP shocks/struts, lovells poly strut mounts, Slowhawk Tuned 344/356
Gone -'04 GTO A4 2.5" custom exhaust, sweet thunder muffs, H pipe, Z06 heads, Baer brake it, 20% tints, torrid red, AEM brute force intake, tuned