I found a chart that shows details on those three struts - did the guy tell you which would be appropriate for our cars? (Excerpt of the chart is pasted below in case the link goes dead some day)
Stabilus Inventory for Lift o Mat and Stab o Shock at TCH - TCH
(I remember ordering replacements based on a link on the Forum several years ago - tried reordering by vehicle model/year and got something totally the wrong size - maybe for the coupe?)