Super Robin?
At the moment I am looking at building a "Super Robin" to address the (few) shortcomings of the aircraft as a long range touring aircraft.
The basic spec would be CS prop, IO-360 engine with LASOR ignition and EFIS.
Other option would be to scrap he vacuum system in favour an alternator on the vac pump pad for a standby electrical system to drive the standby attitude indicator and radio.
This would require an EASA major mod and a lot of work, If I could spread the certification cost across three or four aircraft it would make whole thing more attractive from a cost point of view............. any one interested?