I had a '95 V8 Dakota.I went with a Mopar performance computor(best IMHO for a Dodge,gives an honest 25hp increase but you HAVE to use premium),rev kit (Mopar performance makes one or Comp cams and it's neccessary as 318 valves floats above 5200 rpm which you can go to since the perf comp raises rev limiter),K&N FIPK or drop-in(take out the small silencer panel behind the headlight where the air intake with either).Upgrade ignition(wires - I used MSD 8.5's,hotter coil and MSD 6 or Jacobs).You have the catback already(I had a Dynomax superturbo).Some type of posi rear is a must with sticky tires(can't go over 7" rims in the front).If you go with a supercharger you can't use the performance comp(bumps ignition up to much).
There's also a company in Houston,TX called Magnum Performance.Their speciality is Dodge,including Vipers.They make the parts slo96 suggested.