If you want to get a perfectly square hole for your oil drain fitting when installing your twin turbo kit, this is the JIG tool you will need. It is much easier to run the tap into a round hole vs one that is ovaled out due to the drill bit hitting the webbing on the under side of the pan, this helps us get leak free NPT threads. It also puts it in the perfect location, so no need to worry about drilling in the wrong spot. Simply bolt it up to the lower starter bolt hole with the factory bolt and you are ready to go.
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Almost didn't get this but after using it I can't imagine doing it without this jig!