The things that aren't immediately obvious when you read the top results when researching this mod are the vibration, the internal mods to the block, and the impact on the fuel system. I knew they would be hard to find or expensive, although after eight days I found a pretty wide variety of sources that just require some work to lock them down. They aren't as rare as the $2,000 eBay listing up right now would suggest. I knew that I would need custom pistons, but my build requires them anyway so that particular aspect is not impacting my budget. I did not consider the internal grinding requirement, which makes me uneasy, the fact that I would probably HAVE to run triple mikunis or at least make some serious mods to the SU system, and I didn't think about the increased vibration, which sounds like it makes the car a lot lest fun to drive and causes dampeners to fail. No thanks. Sent from my iPhone using Tapatalk