Merging two 3.8 Forums under 4.0 Suite
 

I have two somewhat common themed forums running 3.8 and would like to merge them both for various reason to a single 4.0 VBsuite system.

I would still use the two different FQDN's of the existing forums. Users would then pick a theme that aligns with their interest the theme's would have to control:

* Header images
* Banner code
* Placement of a java chat frame* or not
* color themes
* forum category display order

Can I do this?