Thanks for the awesome info on this topic! I'm gearing up for an install this weekend and had a couple questions to throw out.
1st: Before I do the external filter install I plan to drop the pan & replace the factory filter. I got to thinking, the one item holding me back from never having to drop the pan again for service was the magnet on the transmission pan. So I ordered a FilterMag to install on the external filter.
What do you think about removing the internal pan magnet and just having the larger magnet on the external filter?
2nd: I noticed some installs on the return hose (not knocking anybody, it obviously works fine that way). I planned on going that route before reading the instructions on both Perma-cool and Derale systems that both instruct using the supply line only. Thought it was odd they say strictly only ONE correct way to install... I was thinking about calling to find out the reason but wanted to see if you guys had any input.
From Perma-cool
"Note: There is only ONE correct way to install this product. The fluid filter needs to be installed on the pressure (supply) line of the cooling circuit between the transmission and the factory cooler, see illustration D. "