Well if he needs help with his 914 and can ship it to Europe, Von Schmidt have done a really nice job with this one https://www.youtube.com/watch?v=dzVr4cpNC58 www.schmidt-oss.com/von-schmidt-eng/

Even electric motor conversions in older cars are coming along as seen here https://youtu.be/qpcSF1kRcFY?t=55