I'm not sure that is going to work. Like you mentioned, not sure if it would fit our spring, and the top hat on the strut is sorta shaped as a diamond, so I don't think the adapter would work. I've always rented this style of compressor from O'reileys auto parts. Its always worked for me-
S & G Tool 62900 - MacPherson Strut Spring Compressor | O'Reilly Auto Parts