I too still run my torsion bars
many of the coil over stuff
has it's own lower control arm separate from the stock set up,
LCA & many have a separate shock mount,
removing the torsion bars, make for a lot of room for headers & oil pan
usually have to change steering too, many are front steer,
Mopar is rear steer, tie rods behind the spindle centerline
both mounts, shocks & LCA's built into/welded directly to
the tubular k-member you will be replacing, the stock stamped steel one with
depends on who's coil over system/k-member you will be using
Gertz now owned by QA1 had one like I described
Explore QA1's selection of coilover kits, 4-link suspension systems, and complete suspension solutions. Designed for performance and durability, our custom kits enhance handling and ride quality for street and track applications.
qa1.net
if any of that made any sense
not all the suspension kits are the same
or use the stock shock or LCA points of attachment
the downfall is the most of the others, are based on a Mustang II design
Good luck