I have this 97 dodge 12 valve p-pump Cummins with about 180k miles tho the odometer reads more but the engine is not the original motor.. I was having a problem with pcm not communicating with the transmission I ended up losing the tachometer speedometer and overdrive so I deleted the pcm and installed a Manuel transmission valve body. You now have to shift manually with a switch to activate the torque converter and over drive.. truck starts right up and no blow by but does need some work as it is an older truck but does run. I recommend to also change the steering gear box.