Uuuuhhh! This is a question for CarbKing, Tim or Martin. At least whoever did this it looks like they stayed with Rochester/ Carter. I have an old set of jet stones but. A 261 uses a Rochester B, aside from the metering valve attempting any modifications to a B is futile. The long needle looks a little like a Holly that my cousin modified to put on his Sunbeams that had 265 and a few 289's. I've got nothin. Really I just answered to see the what the pro's say. Doc.
