JAA IR to FAA IR??

[long final]

Have done a search but didnt find exactly what I am looking for. I have a JAA CPL ME IR and an FAA CPL. I believe I can go to the states and get an FAA IR endorsment without having to do the checkflight, although I will be flying under my JAA IR in the EU.

Could someone fill in the gaps please about how to go about it and what pitfalls I need to be aware off.

Thanks in advance.

LF