I was searching ebay and came across this:
http://cgi.ebay.com/ebaymotors/T25-T...QQcmdZViewItem
and I quote "This turbo can be used on a custom setup for any 4 cylinder application, to make 250-300hp max. It will fit easily on any of the ebay manifolds or a manifold of our own.
This turbo is also a great upgrade for your SR20DET redtop turbo. All is required is to swap exhaust housings, and it will turn this turbo into a S15 Ball Bearing. This setup can push 300-350 on a SR20DET."
Can anyone verify if this is true? The compressor side looks different from a t25 so I have no idea...