Nice looking truck. This is actually a spacer lift. Upper control arms don't provide the lift. The two rings with three holes in them are the spacers that mount on top of the strut to provide the lift. UCA's are there to help with geometry to allow for camber adjustment after the lift. They are different length than the OEM ones. Without them the front wheels would look like that: \ / Not to start a fight or anything.Keep in mind this is a 3 inch level! It’s not a spacer lift it’s upper control arms