Porterbuilt Dropmember On a Longbed

[Thumper169]

I'm trying to find out if a Porterbuilt rear dropmember will fit a longbed 71 C10with a 2 piece drive shaft?? and I cant get a response from them directly. It apprears everything is the same as the short bed but Id like to confirm the fitment if I can. It's also currently running a leaf spring suspension so I assmume a new set of spring perch's would be needed as well or does the kit come with them? and running a 8.5" rear wheel would I need inboard or outboard bag mounts? Truly sorry for asking such dumb questions but after weeks of trying I cant get these answers and I want to get the parts ordered asap.