if your going to change skids put in an extra 10 or maybe an SC10. the pro-action has lots of travel issues and you won't gain much in comfort.
Just be sure to measure up the holes everywhich way from the donor sled before you do the Exciter. Measure 3 times or you will end up with extra holes in your tunnel.
I put an SC-3 in my V-max and it wasn'ty that hard.