I've been meaning to do this since I got the car. Having just been hired at a Subaru dealership now seems like the appropriate time. I'm gonna have a mechanic install the cooler for me as; 1. I'm too lazy and 2. I dont have the resources or time(lame excuses you say? yes!). I think I've found all that I need but I just want to make sure with you guys.

Summit Racing:
1. PRM-10678 (perma cool filter)
2. BMM-70268 (b&m cooler)
3. ATM-2640 (auto meter gauge)
Sub Total: $119.85

Questions:
-do i need some kind of sender for the temp gauge? If so where can I find it?
-are the combination of these 3 things the most efficent and cost effective way of keeping my torpid tranny cooler?
-if not what else should i get?
-should I have the cooler mounted in parallel?
-best location for the cooler?

thanks,
-Alex