Suspension for EF9

Hey i just bought a 91 ef9 and last owner decided it be cool to ride on cut springs so the shocks are fucked not to mention any other parts that might be but doesnt matter anyway since everything was going to be replaced anyway.I was wondering if i can fit a whole gsr and brake setup onto my ef9 and i want tein ss coilovers would i need integra or civic coilovers,would itr sways bars fit,and for bushings i will be using mugen bushings,i like the traction bar full-race got so ima pick up one of those what else can i do to make my car a handling monster with k20 power