Installed 6 conduits, 3 per side from tail cone under baggage floor and rear seats then up the sides. Used Van's conduit, and installed pull a string in each conduit to use to pull in wires and A/C tubing in future. Drilled 2 holes each in left and right ribs and in under seat floors for routing conduit from under floor to side wall spaces. Secured conduit in bulkhead lightening holes with tie-wraps and aluminum stand-offs made from short lengths of 1/4" tubing (from brake lines tubing). Used RTV to secure conduit in rear holes.