You could easily freshen up the motor in there and swap a TBI setup for VERY cheap and easy, not much research involved, you could also get a complete TPI setup (which I would do, they are great on the low-end) cheap and just run a stand-alone harness (not expensive anymore) and a stock TPI computer and be fine. Just like a few of the other guys here I've swapped and dealt with alot of fuel injection motors over the years, from straight forward swaps to full on custom builds with standalone computers (megasquirt, motech etc). EFI isn't that bad, you just have to know what your goals are. Also dropping in a 454 would be cake into that truck, you could find a donor engine from say a 91' suburban (same body style) and it would come with a 4L80E attached to it.
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