I created a "How to Install a Transmission Cooler on a 2005-2008 Pontiac Grand Prix GXP" website that gives a step-by-step guide with photos, diagrams, and written instructions on how to do the entire process. https://sites.google.com/view/grand-...grand-prix-gxp I have parts and tools lists on there as well, with links for where to buy everything. I created this because I was sooooo annoyed I couldn't find a guide online that I thought was useful or well done. What few still exist are incomplete... missing photos... full of dead links... or for custom transmission coolers you can't even buy from TEP anymore. This guide should be useful for Impala SS, Monte Carlo SS, or Buick LaCrosse Super and for people with 2004-2008 3800 V6 Grand Prix cars too, but it's specifically for a Grand Prix GXP. I installed mine in standalone configuration.