I have recently sold my 2 hole box. I was wanting to purchase a 3 hole but have done some thinking which is dangerous for me. My question "Is 3 holes too many for a box that is only 48" wide"? My truck (stepside) is only 48" and i can't do anything about it for now. That will only leave about 15" per box. I have Goldens and thay aren't that big - 55-60lbs but that still seems small. I am right? Any suggestions besides get a new truck.