Speedo & Tach lens

I need to replace the instrument lense on my dash. I've got a small crack right next to the button that re-sets the trip odometer and its time to replace it. First, is it easy to switch out?.... and any suggestions (catalog) on where to find one? Thanks all!

Part number 393040 from Corvette Central, 77-82 speedo or tach lens. http://corvettecentral.com/

Better still, Bair's has them for the same price and they are a supporting vendor. Part number 1776  http://www.bairs.com/default.asp

Mid America probably has them as well, also a supporting vendor.

Big Fish38463.637650463

Thank you Big Fish...you made it too easy!

On an 82 it should be pretty easy. If I remember correctly, it has a few screws that hold it in. Just undo them and it should be that easy. Quite a bit more involved on an older vette.