AZ exhaust emissions

just moved from indiana to queens creek az. in the next few months ill be going back to indiana to get my 72 duster. i know the cutoff year is 67 and i know ill have to have my car taken to get tested for emissions. i have a mild built 360 with headers and flowmaster 44s with 2 1/4 pipe that exit in front of the rear axle. is there anything i need to know before i go get it tested? ive heard there are local laws about noise, but will the flowmasters be too loud? also any info on what all they test a vehicle on will be much appreciated. i cant seem to find any info online about what all they check on an old car.
thanks