Here are some pics.  It appears the case was split as there is evidence of white sealant at the seam.  I can shift it 1-5.  There is oil in the crank case, which I can see when I turn it over.  The cylinder sleeve has an "ear" (skirt?) broken off (see pic), so I know it needs resleeving.  The head has all kids of pitting.  Any insights as to what to dig into deeper/inspect/measure are appreciated.