From across the pond, I live in the UK....I bought this car from Virginia & had it shipped over..A friend of mine (ex-pat) lives in Virgina & it was owned by his pal near bye, he owned the car for 40yrs...What part of our neck of the woods? I only ask because I have an uncle that restores and sells GTO's and GTO parts.
Well spotted...yes the passenger side rocker is round the wrong way, the old guy replaced the gaskets & couldn't remember which way it went round :happy0030:BTW, your right side valve cover is on backward... Left (driver side) hump goes in front, right (passenger side) hump goes to rear...
Or could be the other way around, trying to work from memory here, either way one hump goes to front and the other to the rear...