Fred:
I did buy a set of MA 711's this summer but never installed them - actually only drove the car twice and not since early August, so I never installed them to try them out! Your part number ends with the same 711 sequence so I'm betting I indeed have the correct ones when and if I ever get them on.
The car is away in storage for the last month and won't see the light of day until next May so I hope to get them on at that time, if not I may as well not keep the car considering how little it is getting use...
Thanks - Randy