Shouldn't take more than an hour. Here's a tip. The higher you get the car in the air, the easier the job will be. Usually I jack up the front end and slide some car ramps under the front wheels (gives me about 18" height clearance up front). Then I jack up the rear to about 22" and use jackstands on the axle. Give yourself as much room as possible. Also, lube the hangers on the new X-pipe with a little bit of grease (don't go crazy with tons of grease) before sliding the X-pipe through the crossmember. This will make the X-pipe slide into position easier and will also make removal a breeze in the event you need to swap back to the stock cat-pipe for emissions.