Thanks for the replies, this is why i asked, i knew about and read the tech tip about modifing a 250 hei to be used in a 235. I was just curious about this distributor, i will most likely be doing the conversion as there is a auto salvage yard a few miles from my house with tons of donor vehicles to get a distributor from, but im just keeping my options opened. As for what im doing to my engine, mainly exterior mods, I will be installing a clifford 2/4bbl intake with a holley 390 4bbl carb and a set of clifford tube headers in the coming weeks and was thinking of ignition systems to burn the extra fuel more efficiently.