For some people, doing the research and tracking down the right pieces is an enjoyable part of the process. I really like looking at cars like John Olsen's that remind me of what these cars looked like when they were new, even if I know they are a replica. I tried to duplicate a period swap of a '64 Cobra driveline into my Healey, even though I was using a 5.0L motor and T5Z. It was fun trying to make the motor period correct and figuring out how to make the original Healey gauges play with the motor. I always enjoy folks at shows pointing out my "original" HiPo 289, although I end up telling them the truth. Lots of guys would be happy doing a swap with modern electronic gauges, etc., but seeing the original stuff just feels right to me.