I think if you use very early model 1600 steering arms, you can keep your 1200 LCA's, ball joints and caster rods (need differen outer tie rod ends still). These steering arms have the same taper for the ball joints as 1200's. Also if you are going to use Stanza struts, make a reasoned choice between the Jap or Australian ones as this can effect your options for disk & caliper upgrades.