Be a shame to have to do it, but maybe some average wheel well trim, or maybe none.
I think the chrome around the wheel openings would look good, but if you remove that strip then the front opening chrome won't look right there by itself.
See, that's a tough one for me as I don't like the completely blank looking sides, but taking that off a GT would be almost insulting it.
My car is a 73 Swinger and the only trim/chrome or badging on the sides, front, or back is the wheel opening chrome.
I wouldn't like it as much without it, and I really don't want more than that.
(which is also sort of insulting it) :D