Short tube and long tube

[Texas45]

Might have a ridiculous question but I cant see the issue in theory so I am consulting the experts.

I have a 2015 2500 HD 6.0 4x4. I recently had long tubes installed. First finding long tubes for this application is insane. I could not specifically find anything that guaranteed fitment for this year. I ended up with speed engineering stainless that was made for the 6.0 up to 2013 according to them it should carry over in later years which is true given the L96 has changed little to none. I had zero fitment issue with the passenger side but the left was awful...... hit the motor mount, frame, and drive shaft. I had the shop modify the header to fit......being honest he did exactly that and I'm impressed but I believe the header is leaking like nobody's buisness due to the 8 different cuts and bends he made. and makes an awful sound I do not feel like going through hell and back or spend the money on another long tube header for that side to run into the same issue...... so what if I ran a shorty 1 7/8 stainless on the driver side and a 1 7/8 long tube on the passenger side? It's off the wall but why not? If the true duals x and I have a custom tune in theory it should not be an issue right?