Hello Doug,
Actually I designed several of those tools when I worked for your Dad
back in the early 90's
. The air filter molds were a nightmare and way over our capabilities and experience at the time.
Didn't you go into one of the armed forces right out of High School I remember you working there for awhile one summer after we moved to the old Holley Carb Lab building.
Great to see you working with your dad, He is a great toolmaker/designer. I hope to be able to do that with my son in the future.
Your dad has probably forgotten more than most have ever learned about toolmaker/machining.
Ken