Svendson's stainless shop has done very good work for me in the past (E37 pulpit, S35 pushpit, E27 stanchion modifications). I'm sure they've made these before and probably have all the measurements handy. http://www.svendsens.com

:: I'm looking to replace a seriously damaged port pushpit
:: for an Express 27. Does anyone have any idea who
:: fabricated the original parts and/or how to get in
:: touch. Any other ideas?