I installed the 3200 RPM governor spring today and wow what a difference. :--) I would highly reccomend it to anyone who has not yet upgraded to it. My truck pulls much better all the way up and the shifts are sweet.
I can now shift higher and not get that slump between 2nd and 3rd, just seems to hold the rpm up better to allow for a smoother shift and also runs smoother all the way from stop to 5th gear. I love it. Now it ranks up there with my Borgensen steering shaft. 

