Would wheels off an '84 'Vette need spacers in oder to fit on my '78? I found a pretty good deal on a set, still trying to narrow down my wheel ideas 8)

If you had asked about the 78-82 'Vette wheel I can tell you they do not require any spacer. The 84-87 wheel I can't say whether it takes a spacer or not, but I can tell you there are at least three photos of Elkys with this series wheel on the Lauren Engineering website.