well i have recently purchased a 1990 CRX and i am having troubles deciding what engine would be the best. I have been doing research on this for the past month and i just dont know. Either a H22A, B16, B18 or a ZC motor. Which one would have the most potential and be the fastest (with a turbo). And what turbo would be a good option for what ever chioce you pick as to be the best. Im just trying to build myself a 10 second CRX. Thanks for your responses i really appreciate the help and knowledge of what you all have to say .