I would check out
www.streetglow.com for different LED options. its a low power drain and it is fairly bright and cheap. Thats what my lights are. unless you are looking for something like neon underglows. I will look around and see whats out there in the form of lighting available in town. but me and you should get together and kinda do a walk thru on the car and see where you wanna embed lighting. the engine....there are soooo many options... and I have a few suggestions so we should get together sometime this week.