I am mounting a frantz filter on a bracket by the battery/turbo side. I would like the filter to be able to drain itself for changes. I know that some people have routed the drain to the top of the oil filler cap (but this being higher,won't drain the filter), and some use a self-tapping bolt in the crankcase pan. Are there any existing fittings on the block/head, lower than the battery height to route the drain line to, so the pan doesn't have to be punctured?