My B2 see off-roading quiet a bit, went off-roadin the past week. Lets just say the B2 is not a good Submarine vehicle.
What would you? and Why?

Well if it's a vehicle that sees off roading a lot, I say got with the liner. My reason for saying this is in the hybrid S10 4x4 that we've recently built, my buddy's truck, we used Herculiner and it works great. You don't have to worry about dirt, mud, water, and most definitely the smell associated with wet carpet.