Just did it today after reading this thread. I've been thinking about doing it for a while now. Well I never ended up doing it because everybody had mixed opinions of it, but I have an extra shifter that I will be sending to nashman shortly, so I thought, hey, may aswell try it!
So I broke the shifter apart.. that was fairly easy... took it to an exhaust shop to chop the small end off the lower shaft and had them chop the threaded part off the top part and then they welded it onto the lower part.
I'll have some pictures of it installed tomorrow, forgot to get some pictures of it without the shift boot on tho.
Personally, I really think it's a nice improvement over the stock truck shifter. I had already replaced my bushings with the toyota truck ones, but just breaking it in half definately made it feel ALOT more notchy, clicks right into gear! My main concern with doing it was that the shifter would sit too low and not feel comfortable with my arm on the armrest. This isn't really an issue at all, your hand rests ontop of the shift knob rather than around the sides and feels just fine!
Definately recommend it over using the stock shift knob.. Now I just need to put away some extra cash and get one of those sexy nashman shifters!