Lee, given that the smaller TC series come with the 60" bucket, the larger TC40 should handle a foot wider bucket. My TC 29 has no trouble with a full bucket of wet topsoil. The more I think about it the more it just makes sense to have a larger bucket on that TC40. I am not familiar with the specs on the new larger Boomers, but you might want to compare the overall width of the smaller TC's to that of the 40. Good luck.