I have an L3240 which is a few less HP than your tractor. I purchased the 60" EA grapple a couple of months ago. I opted for the 60" due to the grapple weight being only about 150 lbs heavier than my bucket. I am also doing "woods" work such as clearing brush and pushing over trees such as china berry, wild cherry, cedar as well as privet and other undergrowth. I am very pleased so far with performance of the grapple. As far as choosing between the 60" and 66" I doubt that the additional width would be much of an issue as the 66" would only extend 3" more on either side than mine does. The grapple has become my favorite implement. It has already more than paid for itself compared to the cost of paying someone to do what I have done with it so far. I hope my input helps you in making your decision easier. I spent about 2 months researching before opting for the EA.