3 bumps in 10 hrs, not everyone lives on the board.
That said, for the plug welds on mine, I used a 1/4" drill bit (may have been a bit larger)
I was just getting metal back on, not a "proper" restoration.
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'86 C-30 dually, 454/tbh400
'73 K-20 350/350/205 (sold
)
I'm kinda like duct tape- no real purpose, but handy to have around.