I wouldn't want to delete my tach...but I'm assembling and engine to test and run without the tach drive in place so I made this to cover the hole. I say prototype because there wasn't much thought put into the design before cutting. The idea for the clamp came after the grooves were cut so the sizing needs some correction.
I was feeling clever, what would you do to improve it?
No, I don't have plans to sell these, but if someone needs one to plug the hole while looking for the parts to fix it right, that could be arranged.