i have a 2010 sv6 sidi with a few mods. yes they cost me but this was done over a year so here u have it guys :)
orssom otr + custom dyno tune $1300
25mm mace manifold spacer - $250 put it on my self
mace engineering cams- $2300 + $950 to install
2.5" Xforce Cat back - $800
20% underdrive...