Installed the 18inch MB Boost wheels today and they look even better then i thought they would...pic below. As promised i checked the weights: Factory wheel/tire is 48lbs., MB Boost with Kuhmo SPT 225/45/18 is 45.5lbs. So i saved a few pounds...not a lot but still better than stock. 
Hopefully i will get the Cobb SFI and CP-e engine mount ( backordered) before the new year...im not holding my breath.(scratch)

Hopefully i will get the Cobb SFI and CP-e engine mount ( backordered) before the new year...im not holding my breath.(scratch)