Yeah - the main reason the PML IS a 1.5" suspension lift is because the stock UCA's only allow alignment up to about a 1.5" lift.

The after markt UCA's do not provide any lift at all...their only function is really to just allow you to get an alignment at the 3" lift height. (Despite marketing claims some of them make as to length, lift, etc...)

If you leave 1/2" - 3/4" gap at the upper bumpstops, typically, that works out to the limit of adjustment/alignment (The upper bumpstops limit droop...so as you add lift...the gap shrinks...))