[mneal]

I agree, it is not rocket science by any means but if you are not 100% and hose the setup up then the gear set will be toast in short order. $$$.

I would recommend taking it to someone. If you have to ask what is needed then let someone else do it. You need some special tools and you have to be very accurate when you set of the Ring and Pinion. I have never done one for a Titan, but I have done a D-44 front axles and a couple of Ford 9" rear ends and they both require a good bit of experience.