I transferred my mods from the 2010 to the 2013. The difference is that the 2013 is PP and I added the catted downpipes from Livernois.
So: meth, airaid, exhaust with dynomax, 2.5" tubing, xpipe and downpipes, HR springs. I am still waiting for the tweaked tune from lms... Dan told me in May that this current tune is far to be as aggressive as stage 5 that I was running in the 2010.
So, I truly believe that my car should run 11.8's on a cool day with tailwind when I get the XV1 tune... No doubt!