If I was going to spend the money I'd pick up a 350 or even a 400 and build that. The 350 will be the same cost or maybe even cheaper to build. Source a core from a you-pull yard and it's only a couple hundred bucks. Just make sure it's one marked R/D before you pull. And it can come out of almost anything with a TBI on it.
In fact I have a core out on a pallet I'd sell for $100, like 130K on it and ran when pulled, but it's in New York. From a '95. Whatever is on it stays on it, I took the intake off to use in another van and never did so that could go with it.
On a 93 there's not a lot of difference there as far as brackets and so on, but you may need to find a computer for a 350 or have the chip reflashed.