I would just keep it stock. im sure this car will never see street warrior status, so theres really no reason to do a bunch of upgrades, let alone drill holes...
I want to keep the mods to a minimum. Right now the only non-stock parts are the mallory distributor, and the chrome valve covers.
However, being a low mile original non-restored six pack car, I want to keep it as close to factory original as I can. I may eventually try to find the stock style valve covers for it.
Here's a few pictures of it as it sits in the garage: