Hey if its bigger/more powerful than what ya had it'll do better! lol Also that thing can crack. All depends on how hard it was worked before.
To answer the loading question about not running a log into the cab. Loading from the end and having that "cab riser", i.e. raised cab,gives you visibility and you can usually see the end of the bunk logs. Once you get those on you just match the butts if they are all the same length. Also on most of the trucks we use the trailer lengths are adjustable so the trucker knows where to set his trailer reach for a certain log length and get his one foot min on the end of the bunks. The one foot is a legal requirement that the end of the log be no less than one foot past the bunk.