I had a Lockright in my old 99. Best bang for the buck add-on for off-roading in my opinion. On-road, the road manners weren't too bad at all - in fact, I hardly ever noticed it - but then again, it was on an automatic, and from what I understand, the Lockright road manners are worse with a manual. It'll definitely eat up the rear tires prematurely if you purposely "test" it out like I did when making sharp turns. Also, it was a little dangerous driving on ice and wet slick roads if you're not careful. I had it for about 40K-50K miles on my truck before trading it in after a wreck, and it never ate up any u-joints or caused any driveshaft wear that I was aware of, but it was on a 2wd Prerunner, and it only saw mild, 2-diamond trails at the most on occasion.