I have just bought a crx with a b16a in it, I was just wanting to get some info about the motor, if its jdm or usdm or what? the block has b16a stamped on it with 5xxxxxx underneath it, and the head is stamped pr3-3, i would just like to know if its a first or second generation b16a, and also if its a jdm or usdm motor.