After a ton of reading, I went with Aluminum caps and studs. Everything looked perfect when I did the winter refresher, the mud truck probably spends more time at WOT then most bracket cars but its hard to compare.

Curious on other peoples thoughts though, I was reading some LS stuff today. Would pinning the cap, or a dowel type sleeve on the bolt like a rod help anything? would it even be possible? less room on the cap surface I think. seems popular with the ls guys.