I am at work right now, but if you would like pictures, I can post them when I get home. It is the heater sold by factory five for $320 + S/H. Below is the photo and description from their site.
Many people think a heater in a car with an open top will not work, but that is far from the case. If you like to drive your car on cool summer nights, or take cruises on scenic fall days, this heater is for you. With separate defrost and cabin heat settings, as well as 3 speeds, it is a very variable system. It is very easy to install in one of our cars and comes with all hardware and instructions necessary for installation. This heater is rated at about 16,500 BTU's so you know it will keep you warm. We include defroster vents and all ducting required for installation.