how to guide for 7 1/4 to 8 3/4

ok heres my project my swapping car is a 76 dart sport was a /6 car now has a 383 a/t it has the crappy 7 1/4 i have a project/donor car im getting the 8 3/4 from which is a 63 dart that was a makeshift project car back in the 80's the guy got parts he claims were from a 69 dart gts which included a 360/340 4 speed and a 8 3/4 rear end well ive already sold the 4 speed set up now i wanna swap in the rearend. Its a 741 weak pumpkin but what i need to know will the springs bolt up to my 76? I have several 489 housings ready to bolt in the rear also is sbp so i figured id order axles from dr diff sometime i wanna know if theres a simple pic filled guideline to removing the springs from the car to make my swap nice and easy any tips welcome