I bought the same filter adapter that deve uses on his spun on filter kits. Here is his web site that explains everything you need to know to go to a spin on filter.
http://devestechnet.com/Home/FullFlowOil
I made my own oriface and then had to figure out where to put it. On mine there is a couple holes on the front left side of the bell houseing so i made the bracket to bolt to those holes and drilled and tapped the bracket to bolt the filter adapter to. Took me a few tries to get the lines bent to fit good and look good.