Originally Posted by Thriftmaster_Phi
If correcting a non-centered-non-circular Hole, using a drill Press...
That's a tall order with any sort of drill bit. Best you can hope for is some improvement, be real tricky to get it dead true in the center using a drill press and a vise.

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-