4.3 motors

Since we are on the subject, I have a 95 blazer with a blown engine and a 96 blazer that cannot be registered. They did some goofy changes in the engine design but with a complete donor truck theoretically I should be able to swap harnesses and everything over, right? both are obII. Both 4.3's. screw the engine codes. I need to do something with all this scrap iron laying around.
swapping vin tags looks a lot easier. I am good with autoglass and the cops are retards around here. :nono: i know. i know. I am sure someone had to attempt this swap already. Tell me the secrets....