Looking at the 04 catalogue, LSD and TCS are not on the base. Other things you would not get are the Xenon headlights, which you can do yourself. You would lose the cruise control, which I would have to have for long drives. Don't know if you utilize the homelink or not and the self dimming rear view is also not on the base. Only other thing the base does not have is the cross drilled alum. pedals and you could do that yourself too. I'd personally have to go with the enthusiast if it were my choice. Just my opinion!