Making a new phone behave like an old one

[hajjat]

Hi,

I had a project done on HTC Touch Vogue (6900) sprint phone on an Android ROM. However, because its processor and RAM are darn slow I decided to get a Nexus S phone and run the same project on it.

It turned out that the code of the project is very dependent on HTC Touch and it never got to work on Nexus S
Is there a way to make Nexus S behave exactly the same way as an HTC Touch (same boot process, no 4g, EDVO, etc)? I'm sure folks who develop ROMs should be able to help.
Or, if an emulator is available, than can run inside my Nexus s and emulate the old phone that also should be great!

Your help is greatly appreciated, I've been stuck on this for quite some time! :\

Thanks!