Hi
I have a 2.2E that I have rebuilt, I have used S barrels and pistons but retained the E cam, I also ported the heads to S spec 36mm and the throttle bodies to 36mm, the car has been set up on a rolling road and has 177BHP and 212NM of torque, it runs very well and still pulls like a train from low revs. Have a look at this thread for more info, it might be of interest to you.
http://www.ddk-online.com/phpBB2/viewtopic.php?t=17139
Kind Regards John