Not that hard. Had to disconnect a few wiring harnesses, fuel lines, throttle linkage, tranny linkage(if you pull the tranny out) motor mount bolts, radiator hoses and a few other misc. stuff. The 383 part is alot of work. It depends on what kind of 383 you want. Do you want 383 ci with all stock parts back on it or do you want a high performance 383 new heads, intake, headers, throttle body etc. You can get a decent 383 kit for about $800 minus the stroking of the block which you would def have to have knowledgable shop do and thats not cheap! Id say that would run you close to $500 or more then to have someone put the stroker kit together wont be cheap lol. Engines and car audio arent the cheapest hobbies to have haha