If you're willing to do a swap, that means you're willing to do some work yourself. Yank the motor, have the bearing journals redone, and get the crank polished. Get some over sized bearings, new rings, and a head gasket, and you're back on the road. Might want to do an itr oil pump while it's out, but not a NEED. Cost of bearings, rings, fluids, etc should be less than 200, and the machine work shouldn't be too bad either.