I am thinking about modifying the Docero MLTL design shown on the Docero kit page. I want to add wood side panels something like the Joseph Audio Pulsar, so need the interior narrower to keep the outside width the same. I would like to have the interior dimensions be 6" x 11.08" instead of the 7" x 9.5" size included in the plan The port, interior height and stuffing would remain unchanged. This would have the same cross-sectional area, but would change the dimensions enough that I was worried how the internal wave would react.
Is this change possible without changing the tuning?