there are no pros to running a stock integrated head on a 250. If u port/polish, enlarge valves and adapt a 2bbl right to the log head, then u may have a half decent head...thats probably cheaper than getting a new better flowing intake, but u need to do these things to see any proper performance. The biggest fallback of the inlines is the head...and lack of breathing. and when u ask if it will fit on any 250 motors, do u mean chevy to ford or vice versa? easiest way to check if heads will swap is to go to a parts store and compare head gaskets. I have yet to see a cracked log head...unless thats a chevy thing....hehehe, just kidding
