As the story goes, former Teamsters boss Jimmy Hoffa has been buried somewhere under the west end zone in Giants Stadium since 1976. If that's true, he is about to be buried even deeper when the stadium is demolished this spring. A spokesman for the FBI said the bureau has no plans to oversee the demolition of Section 107, where lore says Hoffa's remains are entombed in concrete. Competing theories about Hoffa's final repose have surfaced over the years. Three times between 2003 and 2007 authorities searched properties in Michigan only to come up empty. Once demolition is complete, the 13-foot bowl in the ground where the field sits will be filled in with concrete and asphalt and turned into a parking lot. "If he's down there, he's going to be down there deeper," said Frank Gramicizia of Gramercy, the demolition company.