^^ depends on the shop if there busy may take a while, when i got my exhaust done it took from 10-3 but we told him not to rush.

its always good to leave it with them for the day an just let them call ya when its done.

havent had much experience with cats otherwise i bought a $120 hi flow cat overseas an that worked out really nice, but magnaflow have a good reputation with exhaust should hit them up.

what inch piping do you have?