I am a bit of a gear head, and I am the type who would make everything she touches fast if she had the money (and skills/time). I currently drive an EM2 civic, which is in the shop getting the recalled airbag replaced. but if I where to do a build on that, I would so a transmission swap (to 5/6 speed instead of auto and new gears), dump a J35A in it, and then just play with the suspension and breaks until it grips the way I would want it to.(probably wont do this build, but if i got the chance with another EM2, I know what I would be doing).
however for dream builds, I pretty much ave one that I will make happen eventually. MX-5 with a turbo rotay motor, new gears on the 6 speed housing, and new suspenssion, slotted pads and rotors, and all kinds of stuff to bassicly make it crazy run what you brung car.