is it at all possible for the rocker cover, arm, and whatever else is needed to get to the head nuts to tigheten it up without removing the whole engine in a bug?

No. Engine must be dropped...

thought as much, dammit,:cry o well out it comes, soon anyway just needa find a few things so i can, are you absolutely sure its impossible? theres gotta be a way dammit:vader

so it is possible then? just a pain in the a** to get to the top nuts? i dont want to take the head off, just tighten the nuts that hold it on