Just wanted to throw this out there,
But I got mine in and this thread will help people "searching" for answers to the Sonnax piece!
I have had mine in for two days now, along with
BlackRamHemi...bad @$$ black reg cab (please chime in)
and we both are very happy with the shifting results. I cannot speak for the few that have bad things to say about these pieces....but I can't confirm their claims either, because....
My truck shifts WAY better with the Sonnax in! I found tons of happy owners on the D T forum, so I went for it, and will never look back!
Edit: Here is the install.......passenger side of the transmission at the back corner of the fluid pan...single connector behind the y-pipe / heat guard plate! The Sonnax just clips between the transmission and the stock wire...only one way to do it!