You can also just use a prybar on the flexplate starter teeth to rotate the torque convertor bolts. Once the engine is out might as well replace everything you can afford. I would, at least, replace radiator, water pump, hoses, oil pan gasket, rear main seal, valve cover gasket, head gasket, exhaust/intake manifold gasket, oil pump, and spark plugs. If money allows, I would replace the lifters as well. To make some of the money back you can sell your old head, valve cover, if the block isn't damaged you can sell that, too. Good luck.