I think that the UCE can benefit from these things.
It seems to me that the UCE has sufficient compression the way it comes, and the indications are that the bottom end is built well. How much power it will hold is unknown to me, but the odds are that it's good enough to push some extra power with it.
So, that means that things like the Power Commander and breathing improvements on the intake and exhaust should yield some good benefits without having to perform engine surgery.