Are you scratch building the tower? I made a drawing for my 1/100th Saturn 1B (link here) in case you're interested. Not sure if eRockets/Semroc still carries those parts for the nose/tube/skirt

EDIT:
they have it http://www.erockets.biz/semroc-bals...conical-flared/

not positive about the description of the tube, however
http://www.erockets.biz/semroc-body-tube-st-2-2-0-long/

__________________
David Stribling
NAR 18402 SR
But it is rocket science!
Get yer Barrowmans here