32mm was off the top of my head and I have broken more than three 1/2" breaker bars just loosening the bolt that should have no loc-tite. A cheater pipe won't work with a proper torque wrench and you'll need the proper tool to lock the flexplate or come up with a shadetree way to hold the engine for the balancer bolt. It sucks. Trying to make flat rate money on any diesel is that's why I hate them...and the fact they cost so much.