You should buy these if you have Tacoma springs in stock. No more dragging your butt to the floor with baby weights. I just towed 6,000 pounds of wood like it wasn't there. Make sure removing the replacement part when installing makes life a lot easier. Also, don't install one of the bolts against the leaf springs like I did. As my suspension moved, I heard the clicking sound of the spring touching the threads of the bolts. No big deal just had to come loose and slide off. I had a slow leak, 5 pounds a week that I needed to track down. Remove the inside of the valve stem, reinstall and use pipe lube. I needed pipe lube for a fitting. It comes threaded but will not work properly unless you tighten it fully. I had to loosen it a bit so it faces the back of the truck. Installed filler taps next to the license plate seem to be the best place. Do not install in the filling space of the gas tank. I've seen some people do this and they're having trouble venting with some air hoses. I just use a bike pump on the back of mine and it works great. One of the biggest you stand on.