Morning Chris, I found this info on an old Barn post from 2012, hope it helps.
1.
www.queencityplating.com Queen City Plating 425-315-1992 (Washington)
2.
www.frankfordplatinginc.com Frankford Plating, Inc (Pennsylvania)
3.
[email protected] Craig Riker 419-290-4442 (Ohio)
4.
www.nu-chrome.com Nu-Chrome (Massachusetts)
The link below may have some helpful information
You may have to copy and paste the link
https://www.fordbarn.com/forum/showthread.php?t=70412