i was checking into having a set of fab alum valve covers made for when i go to the roller rockers next spring. they want 350 bux for a one off set. also its hard to have them dipped and baked or polished because they are plastic. this is one of the longest running valve cover design GM has used and no one makes a custom cover for them. the were on all the 3.0L, 3.3L, 3.8L from the start up till now. we had a new GP in our shop this week with a series 3 in it, and guess what, still the same covers.