With all the new technology and the new push for larger engines why has hustler not made the new briggs big block series an option for there mowers. I seen that they offer a vertical shaft engine. I bought an exmark just for the reason they offered this engine. It is a great power plant. All the power I would expect for a 72" mower uses minimal fuel, starts great and uses little to no oil. I would consider a Hustler if they offered this engine.