Early 3.0 sohc engine is NOT an interference engine, and can be turned with the timing belt off. Crank pulley bolt removal is done with the starter and a breaker bar long enough to reach the driver's side frame rail - one tap of the key and it's off - but you'll still have to get the pulley and sprocket off the crank, which was a nighmare in Powell's, and required a new timing belt sprocket before we were through.

Not responsible for advice not taken...