bagging my 68.

[cstm68]

im going to start bagging my 68 in the next few weeks and im not shure how to do the rear.
for the front i will be using upper plates with lower cups and 2.5'' drop spindals.

my question is do i need to monster notch the rear to get it to sit level?
i want to do somthink custom with the rear bags because i dont want to put them in ware the coils spring comes out. i want to do somthing with a braket on the axle tube and add a crosmenber directly obove it.

so will i need to monnster notch is and cut the bed, or can i just use a bolt in c- notch?