all right i want to do an engine swap in my 96 chevy blazer its a 4.3 with od transmission i have a 70s era 350 but what i wnat to know is will it fit and bolt up thats my question and also what should i get to do the swap in the first place

 

Yes and yes. Been done plenty of times. I put a 82 350 in a 95. They sell complete manuals on how to do it and sites like v8s10.org and .com to help you out