Looking for a junk flywheel for a steel crank 340

[soccernut43]

I built a make shift engine run stand to test/break in my 340.  I was going to use the old torque converter but when I got the transmission rebuilt they needed a core for the converter manufacturer.  Just looking to use it for the ring gear to start the engine.  Engine has a steel crank which I think may matter.  Thanks.