The Vitamin C engine is the lower compression Variant of the 426 Max Wedge.

I'd ordered the 426 decals for the valve covers. Today I took the valve covers off to wash, scuff and paint. That's when I noticed the there wasn't enough room between the filler holes and the evac holes. I looked on the Interweb today and all the valve covers I saw for the 426 had tall filler tubes

Each valve cover has a number but I can't tell the difference between the left and right. I can't make out the number either not stamped hard enough, or had a sander beat it up.

Anyone know what these came off of? Click image for larger version

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