ARIZONA members- Phoenix area emissions testing- How hard is it to pass?

[cowboy33713]

Howdy;
The wife and I are interested in moving to the Phoenix area, and have learded they do emissions testing on cars and trucks dating back to 1967 manufacture. Know from the state website that it entails both a visual verification that required emission control equipment for that model is present, and an exhaust "sniffner" test to determine if vehicle requires "repair".
Does any member here have FIRST HAND experience with the Arizona emissions testing? Would especially like to here from those with trucks that have had bigger engines swapped in, and those with engines modified from stock specs.
Thanks for any relevent info.
cowboy33713