Scott,
I have double checked again, the parts came in a box marked PX600, but when you look at the dimensions it is definitely a PX 500 unit, sorry about the confusion. I am not having a good day, been on holidays and back to work tomorrow. the flanges I made myself.The link to Pipercross is
Pipercross performance air filters for road and competition use | The Pipercross Shop. Personally I think that is a good looking setup, just waiting for dyno figures after I get the exhaust system to seal properly, will email the photos to you shortly
Regards,
Duncan<img id="ums_img_tooltip" class="UMSRatingIcon">