Stan, the pics you posted of the Mancini starter, is that a pic from Mancinis file or the one you tried to install?
If that's the starter you have, remove the BATT + cable lug and the black plastic housing it's attached to. There's another lug under it you can hook the BATT + cable to. The lugs plastic housing interferes with a freeze plug boss, take it off and your home free.