If you only want to remove the torsion bars HDK (that's me) have several options.....one being a chromoly tubular control arm, bolt on rear support bracket, re-enforced upper shock mount with bolt on chromoly support tubes that mount thru the frame rails. The only downside I see is because it utilizes the factory LCA pivot /attaching points, we are limited to a shorter coil over shock/spring combo (compared to what HDK uses in the complete rack / coil over conversion)
The first set HDK made was for a guy with a Qa1 K member.
Just to give you an idea....if you need everything the basic package, uppers, and shocks /springs....about $1400-$1500 depending on options
Pm me if you want more details .....more than happy to discuss your needs by phone, text or e-mail.