I am looking to purchase a Gravely 432 to pull a 60" york rake and other pulling duties where more power and traction is required than can be provided by a L or C8. The rake manual recommends a 12-15HP tractor. The Gravely 432 has a 13 or 14HP Kohler. I am currently using the rake with my church's JD GT245 with a 20HP Kawasaki and that works OK. (Would be better if I mounted the weights.) Is the Gravely 432 capable of this application? Does the drawbar have a height adjustment? The 432 has turf tires and chains. I may change to ag tires with weights or filled tires or all of the preceding to maximize traction. This will be my first Gravely rider.