Installing a vb physically is actually quite simple, it is just messy.
It is however highly recommended that you have a volt meter, inch lb torque wrench, and especially a pressure gauge.
It is important to have a torque wrench as overtightening the vb bolts can cause warpage in the vb.
Leaving them loose can cause internal leakage.
Volt meter, digital is preferable, installing either a shift kit or vb,
can or will cause the pcm (power control module ) to go into limp mode, resulting in 2nd or 3rd gear starts.
In order to avoid pcm limp mode you must install a resistor.
The value of the resistor varies from one truck to the next.
It is best to visit your local radio shack and pick up a variety of resistor values. 35 ohm, 50ohm, 100 ohm, half watt or 1 watt
Why am i bringing this up?
Mike Crossley on this site has been one of our biggest supporters and he had a shop, i wont mention their name, install a resistor for him as he was having 3rd gear starts, i checked the truck out when i was in Tulare as he was still having 3rd gear starts, when i went to do a voltage reading on the resistor, much to my surprise there was no resistor added. It was a good thing for Mike that i had a spare transmission.
My point, have your own volt meter, it is critical to be aware of 3rd gear starts as the lack of this $1. 00 resistor, caused $3000 worth of damage.
Pressure gauge, knowing what the internal pressures of your transmission are before and after the vb or shift kit install is one of the key elements of having a good working transmisson.
If your pressures are too high, you can end up with a hunting problem, if your pressures are too low, your vb bolts could be loose, a pressure gauge lets me look inside your transmission without me actually being there to help you diagnose your setup.
I am not trying to scare anyone into not doing a vb install, i know it is critical to have the proper tools and to do the job right.
For me personally in our own shop it takes us less time to do the actual vb install than it takes us to do our pressure testing, road testing and selecting the correct value resistor for the application.
We even designed a adjustable voltage regulator so we dont have to mess around with resistors anymore.
So for those of you that dont like to mess around with the resistors and the soldering wires, this is a easier system to use.
To recap, if you dont mind getting dirty, and have the correct tools AND read the instructions, AND READ THE INSTRUCTIONS before you tackle the job, AND READ THE INSTRUCTIONS,
did i for get to mention read the instructions, the labor part is not that tough.