I have a mazdaspeed 2003 black with HI BOOST FMIC,INjen intake,Greddy type S,apexi exhaust an 3 inch down pipe.Boost guage an oil all auto meter an kartboy short shifter.solid motor mounts.46,000 miles on it I have a loan an am looking to get $13,500 or best.have the stock stuff to.I have lots...