Exporting plugins and customizations

[Chris8]

I wonder is there an easy way to do this. I know it can be done with templates and styles but what about the rest of stuff.
I have very heavily modified vbulletin, with literally hundreds if not thousands of plugins and customizations and also modified core files, functions etc.
Now when I launch my forum, people start post etc, the life productive version database will grow in user created data.
I will still continue to develop my forum but on a clean, offline and separate installation. Would there be an easy way to export all my modifications from dev database (plugins, and other stuff for example thread prefixes, profile fields, phrases, variables and so on) and then apply them them to life productive version in a quick simple way? Or will I have to apply all new customizations/features manually and just be well organized?