I just installed a set of Summit brand ceramic coated headers in my 69 road runner with a 440 engine. The headers are 1 7/8 inch primaries with 3 inch collector. The collector on the drivers side is getting close (straight into) to the underbody cross brace with the reducer on and will require a sharp elbow to complete the exhaust system on past the transmission brace. I feel this will be a restriction of flow when the elbow is installed to make the turn and was wondering if anyone has ran into this and what you did about it.