Do you mean stock TYPE suspension (retaining torsion bars, but with beefier and/or improved parts), or actually stock suspension simply with new replacement parts.
I imagine that depends upon what you are comparing it to.
Versus a Tri 5 shoebox, probably handles well
Versus stock with worn out parts, probably handles well
Versus a BMW 3 or Miata, probably not so well- IF truly stock. But "beefier and/or improved parts" on a stock type system can give em a run and possibly a little whuppin