450 may be a bit ambitious and rated at the crank. I haven't dyno'd it yet but United Motorsport claims my setup is 333 at the wheels. I had to upgrade to a performance high pressure fuel pump which wasn't cheap, ~$1100. It's perky but not fast.
@concordia Soundaktor was the first thing to go. My setup isn't obnoxiously loud but when you get on it you can definitely hear it. This is basically it: http://youtu.be/9Ztrvolj1bM
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