The 180 figure is mostly bs in my opinion. With ram air you can really quote whatever you want. I can almost promise that a dyno run with that engine will produce no where near that number. Maybe at 150mph the engine will be pushing that much power. But kawa has a much better ram air system.
IMO the 04 r1 has a few minor improvements (mainly to the frame and swingarm, that tilted engine is interesting also) and alot of eye candy. That pretty much keeps with what yamaha has been doing since 98, killer looks and good performance but still lacking when compared to other bikes (like the gixxer). The fact is, it seems many people will buy a bike on looks rather than performance (is this because they know they can't use all it has anyway or some other reason?) and yamaha has done a good job tapping into this.
180hp I think not
P.S. the front end on that r1 is ugly , the best thing it has going is the tail section, that underseat exhaust is trick, but once again its not there for performance its there for looks, and will be much more expensive to replace with a aftermarket pipe. My nod goes to the kawa.