Exhaust clamps for lap joint 1.75?

Interesting cause I do have a question about tools. I dont want the existing pipes to shake like crazy, potentially breaking somewhere these pipes are old. So I have sawzalls, I have cut off wheels, I have hack saws, angle grinder. I want to do all of this while it is under the car, I am not removing the pipes, just cutting the old muffler out. Actually the inlet needs to be cut. the outlet is already clamped.