Front Strut w/o spring guard

I am trying to find the right Gabriel Ready Mount Strut (has new coil spring already mounted on it) for my 1990 Buick Lesabre. Everywhere I look, the descriptions say that in order for this specific shock to fit my Buick, it can not have a "Spring Guard". Does anyone know what this spring guard is and how can I tell if my car has it or not?

Thanks