Darlington is no longer in business; so you'd need to either find a used kit for sale, make your own, or have a fab shop/buddy who can weld make it for you. As to whether or not its 'necessary', no, plenty of lifted 'Zus do not have them so its not necessary. Depending on what year and model your truck is, though, it is certainly a good idea. You didn't state the year and model; so I can't really comment specifically on that.

Sean Strawmyer
Back and ready to rock...... crawl.

From Indiana or surrounding states and interested in wheelin'? Check out www.mwior.com