Disk brake swap torsion bar??

do I have to loosen up the torsion bars to do the swap.. if so I do I loosen up the torsion bars

yes, you need to loosen them to give you room to separate the spindles from the control arms. can't be done with the torsion bars tightened in.

To loosen is simple, 3/4 inch socket, under the lower control arm, you'll find the adjuster bolt, back it loose, problem solved.