Did see anyone post like this so here ya go
Once you get it up on jacks, take out the O2 sensor, and set it aside, remove the two nuts from the cat, give the exhaust good shake and set on the floor. Get some WD40 and spray the 4 hanger hooks at the muffler. Us a "large" flat tip screw driver and pry the hangers off. Have someone else support it or use something as for it may drop on you (ouch, speaking from experience)
New exhaust, take the front section and install it with the nuts on a few threads. Hang the muffler on the rubber hangers. Solo comes with an extra support for the center of the car in the tunnel. You will need to hold up the exhaust to the car to see which nut you need to take off to install the bracket for the new hanger. install the other sections with the clamps one and snug them up. Once the who exhaust is mildly tightened up, tighten the CAT bolts and install the O2 sensor. Make sure you twist it counter clockwise before inserting the O2 sensor so that when it is tightened, the wire isn't twisted.
Tighten up the rest after you install the tip and check for allignment.