Hi Kurtis, have you tried, or are you a member of
www.mercurypickup.com
it's a site dedicated to Mercury pickups. I'm NOT connected to, nor do I advertise for these people, But you could also check out these sites
www.vintageford.com
www.blueovaltruckparts.com
www.dennis-carpenter.com
www.bobdrake.com
www.midwestearlyford.com etc. there are many, MANY early ford truck suppliers out there that may also have Merc. parts just Google search early Ford truck parts
rick