Well my question is the following I'm just put together a B20b4 block with 10.5 compression Je pistons and arias rods. Itr fuel/water pump and oil cooler. with a port and polished b16 head with Itr cams and aem cam gears. Skunk2 double valve springs, valves and titanium retainers. walbro fuel pump, 390 cc injectors and aem fuel rail, pressure regulator. the motor is not running yet cause I forgot the crank pulley(To many things to remember) . now im looking into boosting 9 - 10lb with a jackson racing super charger.my question is i heard the the stock b20 crank can boost 10lb, is this true?. If not what's the best bet I can go with. Aem, Unorth, ect.. also what's the recommended boost level for the built of this motor? thanks alot. any other suggestions or tips will be greatly appriciated.