ramairetransam

iTrader: (18)

I read or heard somewhere of it being done. Leaving the brakes and hardlines in the car . I'm swapping from my 10 bolt to a mwc fab 9 .

Has anyone else done this and is it more of a hassle than just dropping it all out .

I swapped rear ends in my 85 form the 9 bolt to a Chrysler 8 3/4 but since it was a custom install we did new lines . Anyone have any links or experience with it .

FirstYrLS1Z

iTrader: (4)

yes,if you're using the existing calipers.
even though I'm only using 10 bolts,your question applies.
I replaced my OEM 3.23 rearend with a complete 4.56 10 bolt rearend and then 4 years later put the complete 3.23 rearend back in.
unbolt the calipers and let them hang(supported) in the wheel well,no reason to break open the brake fluid line. unbolt the flex line anchor block(s) off the top of the rearend,unclip hard lines along rearend.
unplug any sensors.

Spartan7

iTrader: (7)

I did the same swapping out a V6 rear end. It's a little bit of a hassle to do it yourself, but saves you the bigger hassle of bleeding the brakes. Just follow the advice above and take your time.