There are several different ground effect packages that is or that were available from different vendors. These packages are all different in configuration and looks. I got my ground effect package from Rob at PJ Grady and I had him installed it some 4 3/4 plus years ago, right after I purchased my DeLorean. I also had the front, lowered 1 1/2" with the spring kit-package by PJ Grady's at the same time. Advantages with the ground effect? It makes the DeLorean looks "faster and aggressive" (too bad, it is not as fast as it looks). With the side pieces installed, the body of the DeLorean stays cleaner and it handles better. You don't get pushed of the road when you get hit by "cross wind" while driving high speed. Disadvantages? Makes the DeLorean looks "bottom heavy" and from the back, it looks "fat." There is a front spoiler piece that is made of fiberglass. If the nose bottoms out -- IT WILL BREAK OR CRACK. Word of advice, do install this piece, for you will be replacing or repairing it often. If you need a front spoiler, get the rubber one from JC Whitney (cheaper too). You have to be very artistic and mechanical "able," to install this part so it will look "correct." Also, do remember and keep this in mind, your DeLorean will NOT BE ORIGINAL once all this ground effects are installed -- Unless, you remove them and restore all the original parts. If any one is interested what my DeLorean looks like, e-mail private and I will forward pics of my car. Kayo Ong #5508 Lic. 9D NY kayoong@xxxx [Non-text portions of this message have been removed]