Hay all u of the ratsun, i need some help identifying a n53 number on head.i havent puled it yet,so i dont know what to expect.basicly i would like to know if it is a nother plain jaine head or maby somthing moe usefull.i havent heard of this one so some one learn me somthing new it is on a 2.0b,with stock cam, just a b stamped on end.