A or B body Axels

Do not mean to butt in but I have a 8 3/4" rear end on my 68 Dart GT and am going to do the changeover to the Big Bolt Pattern. So I am in the market for the 2 LBP axles with the backing plates and drums and brakes. The 8 3/4" housing is from the factory no mods to it. So if anyone has any ideas on finding them I am open to suggestions. Do not want a redrilled axle want a regular made axle. Thank you for letting me jump in to your post. Brian