Well, I needed to replace some stepper motors in my dash so I thought I'd do that while my truck was down waiting for the transmission. I bought the trim cover, face plate and needles for $157 and 7 stepper motors for $18 off of amazon.
My truck didn't have a trans temp gauge but I bought the cluster kit that has the trans temp and soldered in a stepper motor, it looks like this before you melt the solder off to add it
Here are the links to the parts:
http://www.amazon.com/gp/aw/d/B00GHS...=SS115&simLd=1
http://www.amazon.com/gp/aw/d/B006XG...&pi=SY200_QL40