Farmall 656 1965 sales movie 

My grandfather has a 656

Plowed with an 806 and ih 5 bottom plow..some clay ground made that 806 snort,but it pulled through quite well.

I have many years experience on a 856 we could only pull a 4 bottom plow in our ground here in central PA but keep in mind that was 10 to 12 inches deep

If it aint Red leave it in the shed!!!