For the red Ghia, I bought an old engine with 1500cc.
This has single channel cylinder heads. This is my favorite engine. The engine has the code "H"
The engine was disassembled quickly.
Trying different options

the built in version
1700ccm and two Carburettorsystem
Flywheel with less weight
External Oilcooler
Exhaust system from 1970 manufacturer is Sauer&Sohn
this is the sound of the exhaust system
http://www.youtube.com/watch?v=VyyqieIXkvk