The old radiator was 3 years old.

Under 80 mph it worked fine.
75 or so with the AC on and the temp would slowly creep up.

Before the mods there was no problem. But it felt like 80 was pushing it, now it cruses at 80 and 90 is pushing it.

I don't know about the 250 HP and a 2 core, but the 3 core is great.
Even with a stock engine the $30.00 for that 3rd core would be a smart buy.

One question if the 2 core radiator is good up to 250hp,
Why do they put a 3 core in the V6?
There must be other things taken into consideration.

My 22RE out pulls the 3.0 V6 on long grades such as Mt. Ashland going into Oregon, I've done it.