Sure, I just installed my new side windows (ports) this last summer in my Hunter 28.5 "Amazing Grace". Bought the kit, and it came with almost everything I needed. The items it did not have in the kit were things I easily picked up from Lowe's or Home Depot.
There were clear instructions and links to a video showing how to install them.
Now they don't leak and are so clear it looks better than an open hole.
Bought them at Cruising Concepts and Mike gave easy telephone support when I questioned the instructions. +1 (800) 899-3996