I was cleaning up and overhauling the induction system for a CSX31XX 427 Cobra. The original induction system had been stored on a shelf is a working heavy equipment shop for decades. Unrestored, very dirty, and showing some parts damage here and there from decades of poor storage conditions it need some tender preservation work.
The original oil fill tube was dented, the entrance opening had a bent in lip in one area, and the baffles had been pushed to the bottom of the tube. We could not find a new old stock tube or good used tube in the EXACT same design as Ford installed in the time frame the induction system was made new. It was desired to remove and repair the tube assembly for reuse.
I tried all kinds of suggestions people offered and all were going to add more damage to a part we learned was very rare. I more or less stumbled upon some industrial heavy duty floor anchors of the type used to anchor large manufacturing equipment to factory floors. In the collapsed state it would slip into the damaged oil fill tube. Expanding the anchor gripped the inside of the tube very well. I added a loop to a hex nut and used a slide hammer to easily remove the tube.
Simple metal working repaired the tube and baffles, the baffles were pressed back into place, and the repaired tube was pressed back into its original intake manifold.