Denny why do you stick with the Mopar ones? Since you have it hidden, it's not as if you "must have" appearance correct, right?
I can find out what the newer Dodge pickups use, I bet it's just a Bosch. You could also use a solenoid similar to Ford. Ford wont work because of the neutral switch. What I'm saying is "similar." One of those should outlast you, or the car. You would want one configured like a continuous duty solenoid, IE the two small terminals both the coil.