What size wheel spacers for 1967 Camaro with factory 14x6 SS wheels?

[Lance]

I bought a 1967 factory original SS/rs Camaro this week and think the factory wheels (14x6) are inside wheel wells too far for a good stance.  I’m thinking about installing 1” wheel spacers to widen the stance.  I’d like to get input from others who have done this and advise me on the do’s/don’t.   

[Mike S]

If you plan on keeping the rims (I assume they are DG coded?) and inserting a spacer between the rim and the drum or rotor, then you won't have enough exposed threads left on the lugnuts.