I posted here a couple of months ago and got some great advice. Thank you. I ended up contracting for a 40'X90'X10' pole barn structure. 26 gauge galvalume roof with 6X6 poles with the ends open. The initial project should be finished by mid-July. I'm going to be pouring concrete for the floor and will be closing this thing in with wood siding. I wanted to ask for ideas on closing in the ends. Do I need to sink additional 6X6 poles on the ends, then nail to that? Or, can I stick-build those walls with 2X4s which are anchored into the concrete and attached to the end poles? Thanks in advance for your response.