Removing the original exhaust system is a lot easier if you have a 3/8 inch swivel, a set of flex metric ratchet wrenches, and a set of 3/8 inch wobble extensions 
A set of 3/8 inch metric sockets and 3/8 inch socket wrench is obvious
I use the wobble extensions on almost everything.
Sears has them all......along with the 17 mm transmission plug allen wrench
