I would, but i'm kinda stuck with it. The engine is directly under the operator. It's one of the old zero turn mowers like a Grazer/Ingersoll/White/Deitz. I've got a MAX engine height of around 19-20" and all the Vtwin horizontals are taller than that. I ALSO have to have pto on both sides to drive the deck and the hydro motors.
About the only thing i've found that MIGHT work in it's place is a Kubota Z482 diesel.