Transmission cooler

[jbutch83]

Looking at adding another tranny cooler to my 99 PSD F350. Have seen temps close to 200 degrees at times, I would like to keep it a littler cooler if I could. I have the factory cooler, but I would like to have a littler more cooling power. Any brand better than the others, what size, and how hard are they to install.

Thanks,

John