'55 gauge cluster

[Krumenauer]

I am just finishing the restoration on a '55 2nd series truck and am ready to install the gauge cluster (new original). I have been told that with the chrome frame in place, I have to install the gauges/black background, face plastic from the rear. Is this correct or can the whole unit go in from the steering wheel side of the dash? If it has to go in from the rear, I would appreciate any suggestions that you might have on how to do that.