In case someone is wanting armor coated, here is a link to $395 for a pair (cheapest I found):
http://www.flatlanderracing.com/pacesetter-longtube.html
B O S S
The amazon ones ARE with armor coating or black paint
* CNC-machined, port-matched thick steel flanges provide postive seal at the head and unrestricted flow into the primary tubes
* All tubing is mandrel-bent, 16-gauge carbon steel for excellent durability
* Available with standard black paint finish or optional ARMOR*Coat metallic ceramic coating
* Unsurpassed fit and easy to install with basic skills
* Gaskets included
Think I might have to get me a set of these...