So, finally had the first long drive pulling anything. Only two sportbikes on a trailer plus a bedfull of gear, but no matter what I did, the worst I could get it to was 213. For comparison, this same trip would get me to upper 220s easy, potentially 230s. And for this one, I left the AC on and flogged it the whole way up doing at least 70-75. The trip was from San Diego to Pahrump, with grades like the Cajon and Ibex pass (highest on either was 210, and I was cranking on it doing 70 all the way up just to try to get it to get hot). I'm very excited about this and would definitely recommend getting the 4-Row versus the 3. I'm also noticing the fan clutch seems much more willing to engage. Perhaps it's because the wider core shortens the distance between the heat of the radiator and the thermal spring for the clutch? Not sure, but it definitely helps keep it cool.
Very happy with this upgrade!
Mike