Can someone here provide me with the dimensions of the bolt hole pattern for the 109K-4 gunsight mount? I've got an approximate idea of what the size is, but I don't want to make it too small. My current design has it a bit too large - it covers the panel cutout for the clock.

Here's what I have looks like: http://www.geneb.org/109k/gunsight-mount.JPG

Thanks for your help!

[Edit - it looks like I posted this in the wrong forum. My apologies! I'll try to delete and re-post.)
g.