Thanks guys,
I'll give the pipe wrench a try first. I don't have much scrap steel laying around so if the wrench doesn't work, I'll have to rent a bigger impact wrench than what I have. I don't know what kind of foot-pounds it was torqued to in Detroit, but I'm willing to bet I won't be able to match it. I think I read 220 foot pounds, but I think I have a manual to double check that.
Thanks again!
Cory