That Z sounds like a fun car. Mine was white with dealer installed A/C. Sure miss it. The 240Z has very small frontal area, not much space to mount auxiliary lights. JW Speaker makes a very expensive LED fog that is PAR36 size. Bosch Compact 100 driving or fog lights are a little bigger than that, but not much.
Even if you find compact and powerful aux light to mount, your only available location is too low for driving lights. For that reason, I'm going to vote for headlights with as much long range function as possible.
Yep, the Z is a fun car. Even up on jackstands, as mine is, its a whole lot of fun. Except for the rust.
I looked at the airdam I am planning to install and I don't see how it would look right, so I think that is out the window.