Thanks for the help and comments.
I called my local NAPA auto parts store and gave them the Gates number. They cross referenced to their NAPA number 25-24461.
They did not have it in stock, but got it in the next day. It gobbled up my thirty dollar bill and some pocket change, but it looks good when placed against the very, very old belt that came with the car (fabric covered old one).
And, wonder of wonders: the new one is made in the good ol' U. S. of A.! That surprised and delighted me.
Anyone know how to put that part number on the tech page so others can see it?
Hi Dennis-sorry for the delay but I am using a Gates K060408 belt on my 14L with great success. This also is an equivalent to a CarQuest K4106. Both are 13/16" wide x 41.75" long. Hope that helps. Phil