jodog,
Any advantage with having governor kit?
The biggest advantage I found was towing my trailer. I tow a 35' 5th wheel wieghing 16000 lbs. Prior to adding the governor kit, I would accelerate to 2900 rpm on a steep hill, shift gears and drop my rpms to about 1650-1700. With this weight, 4. 10 gears, 35" tires, and # 10 plate, I was always fighting to keep my clutch from slipping. I always had to feather on the throttle until about 2300 rpm. Now, with the governor kit I make my shift points while towing at about 3500 rpm. At these rpms I drop to around 2150-2200 rpm. At these dropped rpms my clutch still holds fine.
Rnpeder,
Will it add mph?
I have the same gear ratio as you (I didn't read your signature to see what tire size you have). But with 35" tires I would top out at 96 mph. I have driven at about 120 mph with the governor kit. This was in 5th gear at about 3600 rpm. I Have taken it over 4000 rpm (once) playing around when I power shifted from 3rd to 4th gear. I never had the balls to take it over 4000 rpm in 5th. I would guess this would be 135+ mph. 120 mph was all that I figured was safe on 35" BFG mud terrains.
Garry.