Let me know if you need parts I will ship to you asap.
Ok on a side note: I also have the Mopar performance pcm same year same motor, I protect mine at all costs, treat it like gold. No jump starting or boosting, no welding with the batt hooked up, No dealer is allowed to plug into my obd1/2 port ever, no software upgrades ever, No tuners. Our pcm's are part OBD1 & OBD2 the only year for this.
Mopar part # is P5249935 Engine Controller (1996 5.9L ATX Ram). They are not cheap and are getting very hard to find. If you want to use a tuner go find a used stock pcm and install it to use with the tuner, put the performance pcm in a safe spot for later on.
Edit to add.
HUB, PULLEY. Water Pump, Water Pump Pulley 53010221 NLA
5301 0222 crank pulley 3.9/5.2/5.9 Engine NLA