Very well made product. I know that a lot of race cars use these. So I decided to purchase this type (stacked plate with fins). I avoided the NPT type fittings because they can crack the aluminum tank easily. So either flare fitting or double flare (brake line) fittings are my options. It costs a little more than other type (tube & fin or plate & fin) but it packs a lot of BTU/hr exchange capacity in a small package. So you save a lot of real estate in terms finding a spot for installation. Pick up some hose end fittings with the various angles/orientation you like for your application. It is a good product.