Posted by Dave Horvath [24.131.120.209] on Wednesday, June 12, 2013 at 20:44:17 :
Seems this aftermarket company made them for early trucks before they were available from the factory. Neat!
http://www.ebay.com/itm/1928-Thru-1936-Ford-Truck-Maremont-Helper-Spring-41295-X8XGH7-/370778503312?pt=LH_DefaultDomain_0&hash=item56541ef890