Aluminum stacks. Whats ya'lls opinion. It's only going to be the stacks the rest of the pipe would be either stainless or aluminized steel. I'm not really wanting a lot of shine on this truck like you get with chrome but on the same token I don't want them to just blend in as evening falls or being hard to see with whatever is in the background. I'm thinking of going with a brushed or satin finish something just enough to get noticed. Straight cut with raincaps just because I don't see a lot of those kind of pipes.