17" or 18" Wheels on a 1st Gen Firebird?

[69TAPoser]

I am having a tough time deciding on a wheel size for my '69 Bird. I had decided on 18" but my friends are trying to talk me into 17". So if you have any side pics of a 1st Gen Bird with 17" or 18" wheels, please post them up!

Input is always welcome too. I have rear 3" drop springs and coil overs in the front. I am looking to get a little bit of tire up into the wheel wells.

Thanks,

Phil