[marvgarr68]

As for the 94 ip 5068 it was the 94 model 6.5 but some got 5221s. The 93 6.5 were mech and had an ip made for the 6.5 specifically. The 4911 mech 6.5 ip is the best and has the most displacement. I would run the 4911 mech ip in your truck as you were looking for reliability. The 4l80 can be converted over to full manual with a transgo stage 3 kit. It will have all 4 gears and you can just run a wire to lockup the torque converter. The only problem with the setup is the tcc solenoid is a pwm not on off. If you supply it with 12v cont it will fail. Some have put a resistor in line and the solenoid last longer. If you do not want to go manual on the 4l80 a standalone control will be cheaper then making the electronic fuel injection work and last. Do not use a 6.2 ip on the 6.5 maxed it still only put out a little more then a stock setting 4911.