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

well got it out today pretty easy o gotta say the oly issue i had was the shackles there studs not through bolts so i thought it would be a good idea to remove the shackle plate..Wrong needless to say i broke a bolt not a huge deal i guess just gotta drill it out and put a new bolt in.

pics thanks again for everyones help and advise