Serial Plate Numbers

I need to get a new chassis plate stamped. On my Fprod sprite the chassis
plate is missing after 33 years of racing. When I purchased the car, I was
given the title; The car is after some research, apparently a Spreen car
that was built by Bob Spreen for field trials and then put into F/prod
service for a customer. What kind of business would stamp a new plate? Or
does anyone no of someone in the Central PA area that does this.

John Holliday
67 Fprod/street sprite