Why is this question even still going???
The engine obviously needs to be grounded and this is one of its grounding point as well as the gearbox so just leave it on!!! Very simple, I just dont understand why you would even not want to put it back on, If you issue is "MESSY" then you can extend the ground strap along your power steering line to another point on the body or even battery directly. F#!K the images, what is directly connected the the head that has a need for grounding??? um maybe the distributor, ok maybe im a little aggresive since some guy pissed me off lol plus i havent read the entire thread, anyways if the head is not grounded then ground it!