As I was making dinner last night I started thinking about extrude honing my intake manifold and how teflon might affect it since nothing seems to stick to it in the kitchen. Has anyone ever heard of having the inside of the manifold teflon coated or coated with a similar type of material? I figure that a teflon type of coating would be a lot better for airflow than going in and grinding as teflon would create a very slick surface. I just got off the phone with Dan at ICS Technologies, http://www.icstechnologies.com/ and was asking him about this. He said that it could be done but would depend on the type and grade of aluminum that was cast. They have different types of coating that they can use but have to be baked at certain temperatures and the higher the temp the better and longer lasting the coating. However, it all depends on the type of aluminum that the manifolds were cast. So, does anyone have any idea what type of aluminum our manifolds are made of and if not how we can find out? The price to have this done would be approx $180 for the first piece and $50 for each additional piece, so if there were three people interested the first person would pay $180 the others would pay $50 of course it could be worked out so the varitaion could be spread. Comments please.