hitstick8

so apparently my town was having one of these programs, and i was like screw it, its free and they'll tell me if my cherokee can pass smog or not, so i went, waited for like 2 hours till my car was checked, and it didnt pass, but come to find out, they gave me a coupon for up to 800 dollars to get my jeep to meet emissions, so over all, it was worth it, has anyone ever been to one of these, or used the coupon? if so how was your experience with the fixes. my appt to get it fixed is on the 11th of next month..