You may not know it, but you need this engine. I have two of these. This one is my spare. The other one I owned since 1990 and have converted to TMCC with ERR. They are extremely reliable engines. Operate smoothly and are a delight to run. This one is more rare as it comes with the QSI sound system. $250 plus shipping . Ignore the rail king box in the picture. This is a Williams engine
See my other ads. Legacy B&N sd40-2
N&W J 611 w RS 5.0 $800
Lots of other stuff.
scratchbuilt building $150 obo