only thing i am concerned about is post swap issues, for example will i able to get replacement parts? plus will that engine handle pakistani diesel, which is of poor quality. these are some of my concerns else than that d4d with 2000cc, would surely going to compete prius in fuel economy. my plans are to swap 2000 model corolla's engine with D4D. I hope virtual brain storming would help me in this regard. @xulfiqar