Trying to get '96 crank pulley center bolt off!!??

How the hell do I get ahold of the tool that takes off my crank pulley center bolt! I called mitsu and they had no idea where to get it. Ive checked auto parts stores, and they dont have it.

If its the same as a 1G all you need is a socket and an Impact

Hmmmm. Ive heard that same thing. But the engines sittin on a stand. Any ideas of how to hold the flywheel while I turn that bolt?