A-Body 18 x 8 inch Wheel backspace? (Front)

[67Beaumont]

I'm looking for opinions on backspace for front wheels on a 64-67 Chevelle.
I'm pretty sure I need a 5.5" backspace on 18 x 8 wheels for the front.
Just curious what other guys are doing before I order custom wheels. :thumbsup:

Thanks!