First you need to figure out what kind of trailer you're going to tow with and how much that weighs. Then add that to the disco's weight, then go find a truck that will more than adequately pull it. Today's "half ton" trucks will definitely pull 8,000 lbs. maybe more. And they can hold at least 2000 lbs in the bed, so half ton is an irrelevant term these days.
If the weight of the trailer and the D2 are near 8,000 pounds, personally I'd start looking at diesel F250/350, 2500/3500 HD, or whatever the dodge equivalent is. Yes, the Chevy and Ford gas V8s will pull that weight but you'll hate the gas mileage. The diesels will pull it effortlessly.
The other concern you will have is stopping. The medium duty trucks will have better brakes for that weight than the light duty "half tons", and the medium duty trucks should aready be set up for trailer brakes. I am not sure if the half tons are these days or not?
When I bought my 06 F350 KR, I towed my MB E320 home on a u-haul car carrier. Twice I forgot the car was back there. That truck was so smooth.
Now let the debate begin about which brand/engine is best! LOL I'll start...stay away from the power stroke 6.0s Good lord those suck, but they sound cool...LOL. Now the new 6.7 is very very very sweet, if you can swing that kind of change! Its like driving a toyota!
