Very good on a 2013 Malibu mxz bolts were a little short one would not reach through at all. also used own SS lock Nuts with nylon inserts Which should be used. But otherwise great addition to boat easy to install.
I installed the box and it works perfectly. Such a nice product and well made. My recommendation is an easy one... I would recommend sending an allen wrench in the package. I have plenty of allen wrenches but mine were too tall and made it difficult to install. If you simply add a $.50 allen wrench that problem goes away. Secondly, the nuts for your bolts should be Lock Nuts (have the nylon inside them) to prevent ever coming loose. These two simple changes makes this world class.
Overall I am thrilled with the product. Appearance and quality are top shelf. Well done.