Locating the rear with the UCAs question

[gearbanger]

My car has a little over a 1/2" clearance from the wheel lip on the drivers side and a little less than a 1/4" on the passenger side. I'd like to even that up a little, so my question is, can I lengthen the passenger side UCA or shorten the drivers side to pull that rear over about a 1/4"? I have the adjustable Hotchkis uppers.