99+ silverado wheels on k5? what will it take?

[Gaffed]

I have access to brand new take off wheels/tires off of silverados and avalanche's. How much of a spacer will it take to run these wheels on the K5?

I'm looking to go with the steel bullet hole style wheel and not an aluminum where i would be missing a center cap.

 

[obijuan]

i would bet a 1-2 inch spacer would set them nicely. i THINK theyre around 5 inch BS, think.