Hello, I have a 1956 Oliver OC3.  On the right hand side of the hood, there is a panel missing.  The opening measures 3&quot; x 6-1/2&quot;.   I was told that owners cut these panels out of the hood to access the sparkplugs, however, the opening is not a jagged cut, it is a perfectly smooth cut as if done by a shear of some sort.  The back side of the opening has a flat metal tab spot welded to the inside metal of the hood with a 3/8&quot; hole in it -- I think to bolt the missing panel to.  The front of the opening would use the existing hole in the radiator side sheet cover.   I was told this is not a factory opening.  This panel would have had the ribs pressed in it.   Could this have been a bolt in panel from the factory?  Any other ideas on this?  Thank you in advance.