A FMIC is not going to be easy on '10. I took off the bumper skin and they don't have much room. I helped Brian install HIDs in is car and I got a look.
Racer X FMIC for '05-'09 LGTs, '08+ WRX and '10+ LGT,'14+ FXT, and '15+ WRX TMIC. PM me for the best prices for all your performance needs.