Greetings, M/A! I'm very excited to announce that our selected filter vendor has just completed our first dry filter prototype for the DoS R56-thru-R59 MCS & JCW CAI. The project manager for our filter efforts just sent me this filter pic from his desk. We should have samples in hand no later than Friday. A LOT of customers really want an oil-free filter option for the DoS CAI. Unfortunately, we had A LOT of hassle in trying to find a vendor that could manufacture the exact filter that we wanted. It was quite a journey, but I'm so excited This filter will fit differently but is a retrofit part for the current DoS CAI. I'll post details on M/A & "that other forum" in the near future. Product to be released in May 2012 and we will be taking pre-orders in mid-April. -Clint