The 383 car I owned. But these were a 2.5inch TTI system

Im more than a little curious how much a change , if any it will be with my hemi car and 2.25 tail pipes

https://www.youtube.com/watch?v=H1eP_QMFfMU


Something tells me if I go with the Ultra Flows and a straight thru design, Im not going to like it, I have a feeling its TOO loud