You need the Knuckle assembly too, brakes, rotors, ect. Yes theresis a problem with adapting the tension rods. The Maxima has the old bolt through rod like Zs have, and the bolt holes on the LCA are perpendicular with the front/rear of the vehicle. The 240sx has a tension rod that bolts to the front tension rod bucket frame, then the bolts on the control arm are diagonal to the car, not perpendicular.
One solution is basically to take both tension rods for both vehicles and adapt them to work together. Or make a small bracket that bolts to the maximas tension rod mount point and allows you to bolt through a slightly shortened 240sx tension rod.
The other option is that you convert the tension rod frame to bucket style like the 240sx, this is expensive but gives you the mount in solution of using JUST the 240sx tension rods with no modification to the rod.
The other option is to buy some 280zx Techno Toy tension rods and take it apart and combine it with a 240sx adjustable tension rod, and make one part out of two.
Theres some options I have brainstormed over the last year of owning this car.