IMHO Canton makes the BEST remote filter adapter, real piece of work, billet aluminum. It's comes in 1/2" NPT, but all you need is to get 1/2" NPT to -AN adapters (some guys use 8AN and some use 10AN on
oil, I think the preference is 10, especially for a BB). You can order right from Canton here:
http://www.cmfilters.com/remote.cfm#
I think it's $55.00, and they carry steel NPT to AN adapters there (but you might want to get the Earl's or Aeroquip ones in blue anodized).