CaseIh purchased Concord back in the late eighty's-early ninetys, they were origionally green back in the day (pops had one for putting fert in Ridges)............. FNH (fiat?) bought CaseIH, Flexcoil was in with FNH............

The company FNH CaseIH (Fiat?) dumped the concord for the flexcoil cart system, and now Concord is Fargo Aire. I think the origional guys (Concord builders) bought it back from FNH Case Ih (Fiat?) Sorry I don't have a clue about the seeding part, just the tank.

Can't speak for the seeder, but the fert/seed cart is/was a trouble free unit for the time it was in use here. 

Good Luck