also the f20b motor is a expensive motor to build the rods are about 1000 and the pistons are 900. and you could bet the motor would be good for roughly 500hp. cp has pistons and carillo has rods for it. you have to call them and explain to them that they have made parts for this motor, even if they knew it or not. so they can make the parts but they are not off the shelf so they cost more. and you can use a stock f20b head gasket and arp h22 head studs.