For the comment on the t-100 being under powered that may be true with the 3.0 ltr engine but when they put the 3.4 ltr in the 1995-1997 engines that truck came alive!
I have one with an ARB bumper ball joint spacer and an add a leaf in the rear it has towed a bunch of mini trucks on on trailers in its time doing 75 down the inner state with power to spare, this is at sea leave tho and whey you compare the Cummins to this engine they are not even in the same ball park, the 6bt will win every time.
My only complaints about the truck is the captains chairs the foam is getting old and causes me back pain after plowing all day I might see if i can swap in an 80 Series land cruiser seat. I must admit with no weight in the rear the rear is a little light and you will spin tire if you get on it hard at a stop light.
In my opinion the 1st generation tundras were junk, the frames were not fully boxed like the t100 and the front of the frames were weakened so they would fold like an accordion absorb energy in the event of front end collision... good for "safety rating" bad for adding HD front bumper and or plow. Also the frames were made by dayna corp and if there were not replace by Toyota they are bad steel and will rot out.
As far as a fair trade i would say NO, keep the dodge! if you want a good t-100 look around for a 1996-1998 with the 3.4 ltr you should be able to find one for under 4-5k
Picture of the t-100 i own custom mount for 80 series bumper and custom mount for 8' plow, every time i take this truck into town i get offers on it, around these parts these trucks are in high demand.