8 3/4 Rear/Brake Line

I'm finally getting around to putting an 8 3/4'' rear into my 1964 Plymouth Valiant. The one I bought has a damaged metal brake line. Since I'm ousting it anyway, would the line off my 7 1/4'' fit? The rears are the same width and I'll be reusing the 9'' drum brakes, but just didn't know if the bends in the line were different to conform to the new Hotchkiss style rear. If they're different and I had to replace the line (wheel cylinder to wheel cylinder), where would you recommend I purchase this item? Thanks.