Maximum Motorsports Chassis Brace Packages for the Mustang include subframe connectors, K-member brace, and a strut tower brace. Convertibles aren't listed as packages because they came with a K-member brace originally. If you want to add subframe connectors or a strut tower brace, you can purchase these items separately.
All chassis brace packages available for each car type have several options. You can get the XL series Full Length Subframe Connectors or the standard length connectors. In both varieties, you can get them in bare steel that you paint once installed, or the powder coated variety that only require repainting in areas where welding was done for installation.