Unless you're planning to lift it, you can likely find some decent ones, cheap, at any salvage yard. If no yard is nearby, you can order them online from a number of places. Here's one:
http://www.jcwhitney.com/autoparts/P...003421/c-10101
The oil filter screws into an adapter. There are several o-rings that seal the adapter to the engine block. I'd check these as well as the seal on the filter itself. The adapter has a large hex head retaining bolt (it's hollow). There are o-rings on each flange of the adapter and one on the bolt.