I bought a used A518 transmission. I think it may be a 46re (has three wire plug). I was told it came out of a 95 ram. The case numbers are PK52118307 1739 0331. Can anyone verify for me that it is in deed a 46RE?

Also I am wanting to put a A518 behind my 84 360 dodge truck. I have a 46RH for sure and this other might be a 46RE. I know the 360 is externally balanced. Is the magnum motor internally balanced? What torque convertor would I use?