Alllllll of this is info you can search and find.
Combustion chamber volumes,
Camshafts
Port sizes
Modifying neo head for external vct.
Differences with wiring and cas between neo and non neo
Etc
Have you even tried?
Don't get me wrong, I am happy to help but you need to show you tried!
There are recent threads with photos of neo head vct mods.