Um, Those are 6 star wheels. Very Beautiful truck man. I had a GMC SST back in the day. They made it to look similar to the syclone, but rwd and no turbo.
Once you start changing parts, it doesn't matter if you have the parts, it affects the value of a vehicle, I know, found that out , learned that the hard way
If you want one Stay tuned garage Tony Angelao made there own for 6500. Had more power than stock. Truck still needed paint.. Hell of a deal for 4 w drive turboed 4..3.s10