going to a single rotor and plan on running the stock disk. Does it matter if I use the right or left marked rotor? As in the one marked right kinda flows better looks wise on the left side...

 

Anyone?

 

Are you asking if you can put the OEM right rotor on the left side or the left on the right? If yes, no you can not do safely. They are designed to take the load a specific way the rotors are cut. I know there are some aftermarkets that have different patterns you may like better.

 

If it is a solid or full floating rotor I don't know why it would matter, But the semi-floating stock rotors on the Brembo brake set-ups are directional.