Will these rims fit?

[Hazieview]

Hey people how's it going? I curently bought a 1982 short wide chevy pickup. It's dropped a little (probably -2.5" front and -4" back) with drop spindels and shackles. I was wondering if these wheels would fit on it or what I would have to do to make them fit.

http://americanracing.com/wheels/det...lloy&section=A

I would like to get the 20X8.5 if possible.

Does anyone know if these will fit off the top of there head? Thanks for your time! Laterz!