mallory rev limit tach restoration

[musclcar]

okay just got a mallory rev limit tach off of evil bay and i'm quite happy on what i got.it does need some restoration though to make it look good once again.it has 2 small holes drilled in the cup for wire access that i want to repair/remove how's the best way to go about doing this. would thin sheets of fiberglass and resin work or use fiberglass bondo to fill those holes in.the other is the bezel it needs to be re-painted silver can i use spray paint to redo this area or is there another process