In the past square motors worked great, were typically reliable, and make great power. For instance look how many 78 x 78 DMs are around that fkn rip!! Now 5 years ago the performance seemed to drop off once you got out of square on the stroke side, when the stroke was bigger. They just didn't seem to work as well as the square stuff or the stuff out of square in the opposite direction. And as a rule of thumb, I would say that holds true in most applications to this day. BUT there are a few out of square motors on the stroke side running around that FKN fly, but those are typically owned by very experienced owners and built by very experienced builders. And there are limits to how far out of square remains successful. 54 x 78..... didn't work great. 58 x 78 is a fkn riot....