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A couple tips for the installation:
1- Don't mess with the cross over line on the fuel rail unless the injectors won't sit right in the intake. The stock rail I used was a good fit as it was. I have also read about several other people saying the same thing. Try it first.
2- Be ready to bend the rail mounts they claim don't need to be bent. When I installed mine, the injectors were pointing in every direction but where the were supposed to be. Before putting the bolts in it sat perfect. I had to bend all four mount tabs they supply for the injectors to sit square in the bores like they should.
3- Follow their instructions for mounting everything up. If you try to jump ahead of the instructions, you'll find things like the throttle cable bracket won't fit... Or the throttle binds... Or something else that would have been avoided by following their advice.
The throttle body adapter makes it sit just a little bit higher. I had to switch from a 3" tall round air filter to a 2" tall one. The stock setup left very little room between the cowl and the top of the air cleaner anyway so I'd say that the adapter raised the throttle body about 1/2".
One modification I had to do to make it work was grinding the throttle cable bracket to clear a bolt head