[Daschicken]

Keep in mind that 2002-2004 models have a lower cruising rpm than 2005-2006 if you don't think you are going to actually swap transmissions. I assume you have settled for the base model? If I was getting one I would have to get the type-s. Oh yeah, and the earlier models have 16" rims that weigh 16 pounds, the later models got 17" rims that were heavier.

I have compared the profile of the 1st gen insight to the rsx and it is really close! That made me wonder why the drag coefficients are so different, 0.25 vs 0.32. If you can make some mods to bring the rsx closer to the insight then you should see some serious drag reduction.