[turbobill]

The block is a bit different on the Toro-Flow as it has a balance shaft on the left side just above the oil pan rail and the assorted gear train to turn it.

I believe the rod/main bearings are the same size between both and the cylinder head bolt pattern is also the same. The bellhousing and rear of the engine looks the same.

Some gaskets are the same and I wouldn't be surprised to find the rods and some of the valve train may be the same too.