Gutting standard downpipe

Is it worth it? If i could get a 2nd standard downpipe and take out the cats and remove blanking plate on wastegate exit would it offer same flow/performance gains as aftermarket catless downpipe?

How much would one expect to pay to get this done and where would do it? Having a hard time finding a bolt on aftermarket downpipe

i wouldnt do it, not enough gain for the hasel or money, buy an impreza!!ha ha