I'm in the process of doing the same.

the light kits are cool because they keep things simple, but if you really want an impressive kit you have to build it yourself.

I usually buy my LED's from [link=http://www.superbrightleds.com/]http://www.superbrightleds.com/[/link]
They have some white and red LED's that are soooooooooo bright that they can damage your eyes .

I plan to use these ones as headlights
[link=http://www.superbrightleds.com/specs/w18015_specs.htm]http://www.superbrightleds.com/specs/w18015_specs.htm[/link]

That is an 18000 mcd led with a 15 degree viewing angle, so they should actually project a super bright beam just like real headlights.

I ordered these ones for taillights
[link=http://www.superbrightleds.com/specs/r_specs.htm]http://www.superbrightleds.com/specs/r_specs.htm[/link]

If you decide to wire your own, just remember that you need to wire resistors in-line with LED's. There are numerous guides online for how to do so. And if you want to get really tricky, you can double feed the taillights through different resistors with a switch that is activated when the servo applies the brakes, so that you can have them increase in brightness when the brakes are applied.

I have a new crowd pleazer shell on order for my rusty, that I plan to spray with candy apple red and then backspray with metallic black, then mount the lights on under the clear lexan headlight and tailight spots that i won't be painting. It may be a while before I get everythign in and get it done, but I will post pics to my gallery once I finish it.