Auto Parts: tbi 350-4 barrell-350, computer wiring, digital dash

Question
how much work is it to change over from my current fuel injected  305 engine ( blown) to a 350 4 barrel carb.one?  my truck is a 88 chevy half ton( originally had a 454 in it and i have the fully digital dash- so i am wondering just how complicated this would be- what is involved in changing/making this work- reason being there are no engines to match out there at the present time in a price range i can afford-and a mileage that is decent except for 4 barrel carb'd ones.  if this is a total mess ( computer wiring etc) would like to know before i get into it.

Answer
    If you buy a complete engine, meaning everything including the fan, balancer, all the way back to and including the flywheel or flexplate, it isn't a huge deal.  You won't be using the computer that's in your truck, so you will need to make sure that your engine has a distributor and a carburetor that do not require them.  You don't have an electronically controlled transmission, so that's no problem.  And, all of the mounts should work.  You would have to get a whole new harness to hook everything up, discarding the existing computer harness (or you could leave the existing harness intact in case you ever decided to go back to using the computer).  Now, you might want to consider buying a new 305 from Chevrolet, they are surprisingly cheap and come with a 3 year warranty, even if you install it yourself.  You could also substitute a 350 for the 305, but you'd have to replace the two injectors in the throttle body with the bigger ones used in the 350.  Everything else would fit and you'd be good to go.
    Also, you would have to be careful about legal issues.  Where I live, this truck would get flunked at the emissions inspection, and would have to be restored to original configuration in order to pass.  And around here, if you don't pass they revoke your tags, and your driver's license.  Also, we have (most states don't) a mandatory inspection at time of sale which certifies that everything works (all safety and emissions equipment), and it wouldn't pass that, either.  If you live in one of the flyover states (sorry), then you probably aren't subjected to these iniquities (although that's not to say that the government couldn't institute them in the future).