The oil leaks are probably something simple like the valve cover, or timing cover gasket.
Minus arches, looks great, good find!

Rear driver window not moving could be frayed wires through the door. Easiest way to check is to pull off door panel, apply +18v battery to the terminals and see if the window moves -- if it does, its frayed wires in the door. (fuses checked I guess too)

__________________
2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k