Not sure about magnum 360 but the LA 360 uses a different mount/ bracket on the driver's side than the LA 318 does. You would just need to get the driver's side mount for LA360 & use the pass side mount from the 318.
The problem is that ANY of the replacement mounts I've found, O' Really, NAPA, etc, all show the same part no for 318/ 360. I guess "they" just expect us to bend/ shim the bracket to fit.
