i want too build my gsr block with some good pistions and some good rods well all they have in je are 9.5 compression i will be using a b16a head allready decked i will also be using zex i was spraying a 65 shot , but now plan on spraying a 75 allready got fuel pump and injectors but was wondering 9.5 was too low for what i want and will i see a difference in performance compared too a gsr