As appears in another post, if you're willing to sacrifice your original fuel pump drive (in "favor" of an electric fuel pump), a full-time cartridge oil filter can be adapted to the engine without machine work to the block. The steel line between the oil pump's high pressure outlet and the main bearing bulkhead are interrupted, lengthened, and passed out through the pump drive opening to the filter, then back again.
I wrote up some of the work, if anyone is interested e-mail me.
Three or four years ago I did this and it has worked fine. Actually I used copper lines figuring the volume would be close to the same and there would be no pressure problems. One benefit to this is the screw-on filter is out of the way on the passenger side and another benefit is if I wanted to re-use the bypass filter I could still do so. As panic said, I did keep images of this work and would be happy to tell how I did this on mine.
