Yeah i got those same tinted lights on ebay. And your right about the trimming of the battery box. just a few plastic tabs have to be cut off for the big battery. Makes it a bitch to fit all the wires under the seat but it can be done.:swordfighI assume that you got the clear alternatives light from ebay. That looks like a nice light, I am doing this mod really soon and am going to pick up a smoke unit from the clear alternatives website since theres no ones on ebay.
Don't forget to mention that if you are going to use the battery from your 00 you are going to need to modify the battery box a little bit in order to get it all to fit right.