Well i have done the air filter and the fuel filter and the plugs guess a injector treatment and o2 sensor are next As for o2's id just need the front since the rear
is just a cat monitoring sensor or am i off base here
And ok i have used seafoam in other cars in the s/c applications i put it in through the Bypass valve on the super charger correct do i just pull a vac line and let it suck it in....