kinda late to chime in but...if the part has a CARB OE number then they should let it pass.
bulldog, every emission employee i've met has been alright (guess you should come out to the westside

). plus after i pass they ask me to lightem up as i leave.
also, AZ has a law that if your car is 15 years or older and has collector insurance on it then your car is emission exempt. my 94
stang had it's very last emissions test last year.
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94 GT Vert -
MM coil overs, SFC, Panhard bar, C/C Plates, bumpsteer kit, alum. rack bushings, Rear LCAs, Ft ctl arms, 6pt Roll Bar;
MAC equal length headers, catted hpipe, cat back, CAI;
Baer Ft Tk+ brake kit; 3.73
FRPP Gears; 245s ft, 275s rear on Cobra 17 x 9;
Cobra Daytona seats(powered).
00 Excursion - 7.3L 4x4 LTD, 8" lift, 38x15.5x18 Toyo M/T tires, chipped,
Banks i/c,
AFE CAI,
APRacing brakes,
Dynatrac c/o steer,
Warn hubs, HD bumper & 15k winch
http://www.cardomain.com/id/cjones101812