Excellent information. Bryan writes... It's been a while since Jim Davis posted that mod, I have it on my site: http://autoxer.skiblack.com/oil-cooler.html Bear in mind he did this for an FC with a 140 in it. If the intended vehicle is your signature '65 PG Convert, it may be sufficient to just run synthetic oil in it. Vairy truly yours, Rodney Spooner