it isn't hard to get power out of massive V8 engines even if they are built on caveman tech (holden v8), at least ford are putting some tech into their engines. (the new mustang 5L looks pretty nice and the factory provisions for a supercharger to bolt on, hopefully that makes its way into the XR8
i agree with Paul, my GTST when it was running 200rwkw would pull away from a friends 290rwkw LS1 powered commo.