No as I know no way of extracting kernel parts and include them into a new NC.
On top of that the V8 and V9 kernel are not 100% compatible, X50's know what I mean
Kernel contains all for the actual NC functions, so need to rebuild the kernel, find the parts for the search and get the code exchanged, after that you have to fix the checksums and create the new files.
If someone would be able and willing to do that we would alredy have many custom NC's with nice skins and new buttons.