When I had 160/0s and D66 while towing our 30ft TT, it was fine at 2200rpm and up as far as power, smoke and egts go, getting to that point without getting hot first was the problem, and the 3.55s and zf5 didn't help matters. Guys with steeper gears tended to have better results, hence they do breath a lot more at higher rpms, but I wanted something that was more efficient all around, plus if I'm in a situation and have to lug down to 1700, egts are still very managible/low given the low rpm...
I personally think the 160/30 might actually favor you, in both the power, smoke and egt department, and the brute should definitely hold up fine with those sticks as well, again, if it's working for ya, no need to change