I have done that to my 95 dodge also. I had ordered a set and when I pulled the starter of, was I supprised that it had the same contacts that my old 85 toyato turbo diesel 2lt. I got a bigger set that I all ready installed in the Toyato back then in 88 or 89. Yes they are the same as bigger one I have seen else where. I got the idea many years ago when I pulled off a starter on a JD air compressor.
DO NOT grease the plunger. I use anti-seize on the lugs and bolts that hold on the starter . Install the contacts flat when you tighten up the nuts as I have seen them turn and not be flat or make good contact with the plunger.
As for good insurance I pulled the rest of the starter apart an picked the seals out and speared a little grease, not a lot, and installed the seal back in. I have done that several times in the past and I had good luck as generally the bearing will run dry and fail. Over greasing is not good ... . Just a idea Jim