Pleasure to be a new member here! The big but is that I'm having probs with the 3-2 trans clunk in my 2004.5 s40 and some rough shifting going on once the trans is warmed up. Otherwise runs perfect! Can you chime in as to where to get the linear valves preferably Rostra and the part # I would need for for this s40i! Thanks and looking forward to doing this job as I'm in somewhat of a lockdown in Colorado!

 

The S40 5 speed auto is an Aisin Warner AW55-50. you can google that for replacement valve body parts.

Example: https://www.sonnax.com/parts/4195-re...red-valve-body

Some good cross reference info on that site.