Devins are another love of mine also. A year or two ago I learned of a group of guys planning on marketing a replica of the Devin SS and calling it the Ravana. Kind of ironic isn't it? A replica of a replica!!
Anyway, their website hasn't changed one bit in all this time (no updates) and they appear to be somewhat "under-funded"; don't hold out much hope that they will ever finish the project and market a kit.
Their website is
www.classicsportscars.com
Steve