the trouble is, the t/b front has limitations, b/j or k/l , and your at the limit wheel width wise, as to be effective, they need LOTS of caster and camber, also, you have to make them so stiff, they are unpleasant for street use, so i would work with what you have, in view of the fact that to swap to b/j is a lot of work, not so far away from going double wishbone if you do decide to ditch the kingpins, but these can be effective, I've raced with k/l and been competitive, also be sure whatever you do is allowed for any discipline you may want to compete in, same with power steering. also ,generally its not needed, i recon 7" rim width is the limit for a sorted beam, with the necessary extreme camber and caster, after this, its wasting tyre, loosing braking power and generally loosing footprint.
in short, for most people, a sorted beam can work to extreme grip levels, and they are quick and cheap to repair after a shunt. hope this view helps your decisions.
.