These are our 2.5 legal s400 chargers. They have been proven and work weather you pull 2.5 or you daily drive, they will get the job done. They feature a 6x6 billet comp wheel with a larger exducer. The map groove gets machined to .200 and the exhaust gets cut to accept and hx40 down pipe (4 inch). Specs on the turbo are 63.5/83/.90 or 1.0 t4.