I think it won't work with A7 without changes. There are many things different in A8. But it's certainly possible with the right modifications to make an A7 version out of it.
Re: Someone interested in the PhysX source?
[Re: 3run]
#380260 08/15/1111:0708/15/1111:07
The PhysX plugin source on the download page was now updated to the latest version that comes with 8.30. Aside from a few bug fixes, this version uses SDK 2.8.4 and does not need anymore the PhysX installer on the target system.