They actually list the same part number for Evo, Twinkie and M8, no mention of different elements. My one I have currently is on a Twin Cam 96" and will be looking to put on one my M8 107" when it's next service is due.
I have been running one of these on my heritage for years now. Been through 1 O'ring in that time. The bloke in Brisbane sent me 2 for free as I bought the filter when I required a replacement.
There's a bloke in Brisbane that sells them?! Any details?