I struggled finding the right size adapter for my t28, after much searching this is what i came up with.
http://www.gt3turbo.com/Merchant/pro...7&cat=0&page=1
I then bought a filter and adapter to fit onto my braided oil line. This was on my b18ft engine.
i also have ben@ solutions setup on my c1j. Had to move the take off adapter on the block round a bit, take off the oneway valve, and it just about fits. Done about 3000 miles like this with no probs, but its is very tight and is kinked slightly.