IIRC, you need to swap a few of the USDM sensors onto the motor, and possibly the intake manifold, but I'm not sure. I know it is a direct swap and the parts are 100% interchangeable. As stupid as it sounds, pull out your current motor and put it right next to the JDM. Anything that looks different on the JDM...simply swap the USDM part onto it. You probably could swap in the JDM harness and ECU, but I don't think it would be worth the effort at all.

In regards to the shop manual, if I'm not mistaken Haynes/Chilton never made a Vigor specific manual and lumped it into the Legend/Integra manuals which renders it pretty much useless. The only real choice is the Acura factory manual which is like $70 but worth every penny. I did borrow one and scan a bunch of stuff related to the cylinder head, intake manifold, sensors, etc. if you'd like me to email it to you. It won't walk you step-by-step to swapping the motor, but it will definitely help, especially with torque specs and whatnot. Just shoot me an email: curt.montgomery@gmail.com