Installed L & R F-880B forward seat ramp ribs. Deburred and edge finished L & R F-8117 rear seat rudder pedal guide brackets. Installed onto spar box. Match drilled guide brackets to forward seat ramp ribs. Removed all parts, deburred and primed. Installed two nutplates into L & R seat ramp ribs. Installed L & R F-852A rudder cable assemblies and snap bushings. Anchored 13" plastic tubes to the rudder cable guides. Attached F-805E-1 rudder cable supports to the floor support angles. Anchored the 4" plastic tubes to the L & R F-824 aft fuselage side skins. Temporarily connected L & R F-852A rudder cable assemblies to the R-405PD rudder horn. Bolted and marked inner holes of WD-813 idler bracket base.