What type of paints have you guys used to paint engine parts? I'll be reassembling my block soon and would like to paint a few things (powdercoating is not an option, you won't be talking me into it =P). Namely the valve covers, block, a few brackets here and there... I don't want something that will flake off like I've heard of some paints doing. Is clear coating a good idea? What have your experiences been?