Unless your tailights are like what I posted previously, you have to have them. Now, I have see one or two z force's that already had the tail lights with the led blinkers installed but were missing the front blinkers. Almost like they ran out of the standard US issued lights and threw the other ones on. However, I doubt this is your case. Unfortunately, sounds like a learning experience for your dealer. As for the price, I may have gotten a discount, but I believe I paid 275 for the front lights, tail lights, switch, and relay. Can't say how much tail lights are but I can tell you the relay should be around $5. Emersonsc would know what the tail lights go for.