V8 (5.2) swapping a van

So I am thinking of buying a 92 dodge ram shorty van that has a dead 3.9 v6. The van is VERY clean as far as the body, with NO rust.

The interior is faded and old but very solid and complete.

Would it be better to pull the 3.9 and see what's wrong with it OR v8 swap with a 318

Any foreseeable advantages or disadvantages

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What ended up happening on this one? Did you pass on it or buy it?