So I'm gonna go with Speed Daddy headers and I know it's basically a prerequisite to get a flex pipe (due to the common leaks) and band clamps along with the headers themselves. The headers I am looking at say "Inlet/Outlet: 1.50"/3.00"". Does this mean I should get two 3" and two 1.50" band clamps? Also, how do I know what kind of flex pipe to get? The headers also come with a down pipe, do I need anything to go along with that too? I'm just trying to gain as much knowledge as possible about these headers. Any answers would be greatly appreciated, thanks!