im rebuilding a 38 weber. and have a 88 nissan hardbody. used to have a throttle body. i have swaped the fuel pump with a 2 to 4 psi. not sure of volume. new plugs and wires. cap rotor everyting new. my question is is there any specific jetting sizes for a 2.4 z24 motor? if there is i would love to get it right the first time. instead of keep changing them out. nothing special about the motor other then exhaust. running ngk r plugs.