Hello, I put some stock wheels from a 2003 Silverado on my 98 K1500. I couldn't get the center caps to fit, it seems like they screw directly onto the lug nuts with the fake plastic lug nuts, but it seems like my lug nuts are not big enough. I asked Les Schwab, and they said it would be pretty much impossible to make them fit. However I seen a truck simaler to mine with wheels from a newer truck on it, and it had the center caps on... Any ideas? Thanks.

 

Need the newer (and bigger I guess) lug nuts with the threads on the outside. They will fit your lugs.

 

All you need are the lug nuts from that year. The chevy caps screw on the lugs to stay on there.