Technically a 250 head is exactly the same as a 200 head in everyway, what is not always the same is the short blocks deck height. All the 144, 170, and 200’s small sixes will have the same deck height a 250 block is much taller there in is the problem with them fitting on a 250 six engine.
That said yes all the Headers made for the 144, 170, & 200’s will also bolt right onto a 250 head, what might not work in all cases is the length of the header tubes being right for a correct fit on a 250 shirt block application. Mike (in Lavrons Budget 250 Build) was able to yse a set of the stainless 200 six headers on his 1964 Comet 250 Six Swap by making some aluminum spacer plates to fit the 200 headers into the Comet Chassis so if your willing to do some fabrication it just might work for you. Best of luck