Hugo, CO — Local DIY enthusiast and weekend grease monkey John Jacobson successfully finished swapping the 350 V8 engine in his prized 1972 Oldsmobile Cutlass Supreme late Sunday evening. However, the triumph was slightly overshadowed by a mysterious, 1/2 inch Grade 8 bolt sitting quietly in the center of his drip pan.

"That's just weight reduction, man," Jacobson, 45, said while wiping black sludge onto an already filthy shop towel. "Detroit back in '72 was over-engineering everything anyway. If the engine doesn't fall out when I drop the clutch, it clearly wasn't load-bearing."

The mysterious random bolt, which reportedly appeared after every single component, bracket, and crossmember had been torqued to "good 'n' tight," has sparked intense debate among Jacobson’s garage buddies.

• Theory A: It belongs to the starter motor (currently held on by two out of three bolts and a prayer).
• Theory B: It’s a spare left behind by GM assembly line workers during the Nixon administration.
• Theory C: The garage floor spontaneously generates hardware whenever a socket is dropped.

"I counted everything when I took it apart," Jacobson insisted, gesturing toward an egg carton filled with mismatched nuts and washers. "I had 412 bolts going in, and I have 413 now. Mathematically, I made the car better."

To celebrate the build, Jacobson took the Cutlass for a test spin down State Highway 88. Aside from a subtle metallic clunking sound whenever he shifts into third, a strange vibration in the steering column, and a light dusting of metal shavings under the hood, he reports the classic muscle car is "running smoother than ever."

At press time, Jacobson was seen kicking the extra bolt under his workbench, promising to "figure out where it goes" during the car's next oil change in 2028.