Here is my old thread:
http://www.peachparts.com/shopforum/showthread.php?t=215593&highlight=bypass+Oil+filter
There are several Bypass Oil Filters out there. The easiest ones to set-up have Filter elements that cost $25to$30 each range.
With the Amsoil Filter element if you find out what size it is threaded for you can get an inexpensive Filter Base on eBay.
If you tap into the Oil pressure some place other than where I did (in the center of the Oil Filter Cap) you will need to create your own restricted fitting on the inlet or outlet fitting otherwise you will lose too much Oil Volume and most likely Oil pressure also.