89 limited slip Ford 8.8 IRS swap help

Are you planning on using the OEM frame mounts for the sub frame or building your own control arm mounts? Very interesting, love chassis work.

Can't help as I back halved my son's '88 Mustang installing shortened Mopar 8 3/4" with ladder bars. I know more about Mustangs than I ever wanted to so I'll be following with interest.