oh no my one went over the existing pillar that was already there, and yes it did fit directly over the top but with the weight of the gauges it needed something to stop it from falling and moving around, so i drilled a little hole into the gauge holder and in through to the existing pillar and with a plastic push grommet thing, lol i dont know what they are called, used them to hold it in place (when my camera batteries recharge, ill take some pics)
from a distance the triple gauge holder looked ok but when sitting in the drivers seat, it was too clustered and too "in ya face" and also you could hardly see the gauge on the bottom due to to middle one covering most of it up it