Id imagine its not easy. I paid almost a grand to have it done. You have to take the intake manifold off to get it out. While you are at it get a new set of gaskets for that, because they always end up leaking coolant at some point. Flush your system out and replace the Dex with the green if you are still running dex. Save youself from the dex crud and having to go back in there again.
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Exploration Machine- 02' CC V8 swap. 300K+
Portable Roller Coaster- 07' MKV VW GTI
Its another Jeep- 98 TJ