Exactly. Tell us what rear end you are using, what the wheelbase of the car is, then we will give you a length as they are published. Just a body style of car will work too, like a 67 Barracuda, 71 Dart, etc...
70 340 swinger 8.75 rear 489 case does anyone know the right length I can measure once I get it together but was thinking it woe standard size. Looks like the one I have is probably a few inches short