HI GROUP,MY QUESTION IS...IS IT WORTH THE TIME INVOLVED TO GASKET MATCH THE PORTS ON AN EDELBROCK RPM AIRGAP MANIFOLD WITH THE INTAKE PORTS ON A SET AFTERMARKET ALUMINUM HEADS? BOTH THE HEADS AND MANIFOLD ARE FACTORY,NEVER BEEN TOUCHED.WHEN I LINE UP A SET OF FELPRO 1205s,THERE IS A GOOD BIT OF ALUMINUM TO REMOVE,NOT ENOUGH THAT IT WOULD HURT EITHER.WOULD THE PERFORMANCE PICK UP ENOUGH TO WARRANT THIS JOB? IM ONLY GOING TO GRIND IN ABOUT A HALF INCH.ANY FURTHER WOULD PROBABLY BE A WASTE BECAUSE IM NOT GOING TO OUT PORT EDELBROCK OR THE HEAD MAKER.THANKS FOR ANY INPUT!!!