wondering if i got a good deal

well i did it i finally did it i bought a 440 think i got a good deal basically saw an ad on craigslist bada bing bada boom and paid 800 bucks for this motor. ill probably completley dissasemble it and replace what i have to. the whole deal though is the guy i bought it from has no idea about the motor. he never had anything to do with the build up (plus hes a cheby guy) his father in law built it and recently died so he was just selling off his stuff. supposedly was gonna go in a gtx. i will tear into it more but just thought id ask if anyone thought it was a good deal. what i do know is it has an external oil cooler and the edelbrock crossram and dual holleys(dont know cfm) other than that no clue need to tear into it to find more but i just bought it tonight looking for opinions on it