External oil drains...

I've been pondering on the idea ever since I did a little tech story for some online forums. I've always thought it was a cool idea, but never realized until recently that S&S made heads that are already tapped for external lines and in 3 5/8" bore, which is the bore of my 96" motor. I won't do it now, but once I'm done with the other motor, why not do internal feed (Jim's kit) and external drain...I'm backwards like that.