Hi, just to let those know that are redoing this style of cluster that we make a PAINT MASK (you cannot decal this with overlays since the rings are raised plastic)for this insert that allows you to first paint the whole thing with a nice fresh black and the apply the mask over the dry black paint. You then spray it with white and peel the mask off leaving the white rings. Much neater than trying to brush paint or paint pen it.
FWIW, similar masks are available for the non-rallye dash gauges and delete panels for 68-70 B body standard (non-rallye dash).
Hope that tidbit might be helpful to somebody. -Brent