Okay, so, i decided to get a new muffler before i get my catback, how would u suggest going about removing the old muffler and installing the new one. I have no welding tools. The stock muffler is welded on and not sure how to remove it, do i simply use a hack saw?

I would wait until you have all of your parts. If it is a real good kit made for your car, it should pretty much be bolt on. Before you start cutting though, make sure you have all the pieces you are installing.

measure once, cut twice and ask questions later lol

You can go to your local autozone and get a pipe cutter, it is kinda like a rental system, you put down a deposit and borrow it. Most modern aftermarket catbacks are simply boltons, so no welding is necessary.