I finally found set of 2wd leafs for my f100. A guy about an hour from me was parting another f100 (verified by vin), $50 and they are mine now. It appears at some point, f150 springs or possibly an add-a-leaf was added, because they have five instead of four in the pack, and non-oe looking...
While going through my late father-in-law's (and my trucks PO) stuff, I found a brass looking plate about 2"x5" with the Ford logo and the numbers
D7TE-5E212-E8A followed by EX 8 066. Any ideas?