Metric vs. non-metric lug nuts question

[Daniel U]

I bought my wife a 1985 Silverado 2 years ago. We recently had the 1/2 ton 10 bolt differentials replaced with a DANA 60 and 14 bolt. When looking for wheels I found a set of 17X10 Weld wheels without centercaps. I like the look of the stock center caps from GM on the newer pick ups, so I picked up a set with lug nuts(as the center caps thread onto the lug nuts). As it turns out, the newer trucks have metric threads. The problem is, I don't want to replace all the studs with metric ones, just so the center caps work. Does anyone know if there is lug nuts with threads on both sides like the ones on the newer GM trucks?