You could get a decent van that needs nothing doing to it, for the money its going to cost repairing the Boxer. At 12 years old, its not worth it, what happens if say the gearbox packs up 3 months down the line, you are left in the same situation, whether to repair or scrap,. My advice would be sell it as spares or repair, you might get 100/150 quid for it. A builder near me, bought a 60 plate Vivaro low miles, and ran it for just over a year, the timing chain snapped on it and wrecked the engine. A brand new engine was 4k fitted, a second hand one was 3k, so he sold it for spares or repair, and bought a 7 plate Vito to get working again