From memory the ball joints will interchange
Theyre not really a street LCA. There’s no benefit to them over the factory ones unless you’re just trying to gain wank factor
Ke20 are the longest of the Corolla lcas
From memory ke20 is approx 325mm while ke30 is 310mm
Unless they have a ton of adjustment they won’t be long enough and you’ll end up with positive camber.
What’s the reason for wanting longer Lca’s? Just for camber?