[dsraven]

I know this sounds weird but if you really don't have a good running 4.3 and cant seem to source one then the best option for a power plant is to buy a good running wreck with your engine of choice. it will have all the parts you need as far as engine and trans plus you will have a few parts to sell after and make up a few bucks. that only works if you have some room for storage though. I have bought a few insurance write offs and usually the engine and trans are fine. remember they were good running vehicles before the accident.
with the price of fuel these days I would say go fuel injected if you can.
pm sent to you this morning