Manifold to pipe issue: HELP

Yep, the pipes go the length of the car right out the back.
I understand that overtightening will bend the flanges, but I've tried new flanges, different styles, and it still eventually leaks.
There has to be something available that eliminates the flange/pipe setup- something similar to the end of the manifold, (like bolting the end of a manifold to another end of a manifold), with a pipe on it. Then I could just cut my pipe and connect the two pipes.