Help: Will wheels from a 1998 Chevy 2500 fit a 1977 1 ton 3500?

[Kycarguy]

Hello. I have a 1977 1 ton 3500 Chevy ramp truck that has Aluminum wheels. One of my front wheels was stolen with a brand new tire. I found a set of wheels for a 1998 GMC/Chevy 2500, 8 lug x 6.5".They are 6" wide. I have looked all over and can't find out if these would fit.I know the 6" width is fine, the 8 lug x 6.5" should be fine. I guess the question would be the center hole size. Would these be different?

I have this ramp truck and a 74 El Camino SS-454 so I will be coming here now that I found out about this forum. Many thanks in advance.

ky car guy1 at yahoo dot com