Its a magnum engine great engine, a cargo van is not a quiet ride
new, used, empty, full.

If your worried about it rebuild the rear change all the bearings,if not change the gear lube with synthetic and add the shear grip additive
change all the rest of the fluids and abuse it.

I've had three of them, wish I still the last one a 2000, 1500 with a 5.9 Magnum, I pulled my 24' United Enclosed with it! not fast but it would pull it loaded no problem, great van's