You need to unthread the bolts and re-use the donut gasket already in there. Then use a screwdriver (or tool of your choice) to pry the rubber hangers free from the OEM axleback or the car itself (your choice as well). Then re-install TRD and tighten bolts to the best of your ability by hand with a 12"-15" ratchet/wrench. It's not a difficult job.
Had a friend come over today and we got the exhaust installed. Looks and sounds great. Thanks for the instructions and for the offer to help. Much appreciated.