[Hilflos]

I would think that some sort of rocker replacement might be necessary on our cars to get side pipes done. Heat and clearance are my thoughts on potential issues there.

Maybe a side pipe outlet integrated into the rocker, or replacement with something thinner and more heat resistant to allow side pipes to run the length of the door?

Obviously some sort of diffuser replacement would be necessary too.

That said, I think it would look pretty good. I'm unsure if there might be any performance benefit over stock, particularly NPP, but, yeah, might be a good look.