Technology Stack Upgrade Only (to SP11)

Hi Team,

I looked at the forum and found some information regarding the Support Pack level necessary for the new features of WDA. We are on SP07 2004S release and want to do a "Technical Upgrade to SP11" so that we can use the new features of WDA framework and get rid of Short Dumps, JavaScript errors, and enable proper Adobe Integration . The catch here is that we don't want to upgrade our core business functionality and keep that to the current level, BUT only want to upgrade the technology stack to SP11.

Specific Questions:

1) Is it possible to only upgrade the Technology stack by applying SP11 (without impacting the core business functionality)? My understanding was that; SAP has separated the technology layer from the business layer in NetWeaver Platform. In light of that, it looks like, we should be able to upgrade the technology stack separately. Is there a specific download for this technical upgrade?

2) Is it possible to only upgrade the BC-WDA component to SP11?

I looked at some similar forum posts and could not find answers to these questions SAP Notes for most recent support pack . Please guide us in correct direction so that we don't take an incorrect approach to start with. Thanks a lot for your time and dedication.