[Trackrash]

Beside price, unless you have test driven the motor, even then, I would do a leak-down test. If it fails, call it a core, and negotiate.

Look underneath at the cylinders. You want Mahles, a good chance they may be still in spec and reusable.

I would want a COMPLETE motor. Distributor, fan and shroud, exhaust, and flywheel.

Shop around. I once looked at a motor that "a German guy rebuilt it". I looked in the intake port and there was carbon on the valve. It was also missing the fan, shroud and alternator. I told him good by. Basically the motor was worth zero.

Edit: Just saw this on FB. Might be worth a look. https://m.facebook.com/groups/240974066679363/permalink/1327041181405974/?mibextid=lURqYx