Fox makes a 74. If you trade in an old engine (any brand, working or not) they will sell the 74 to you for half their list price, which makes it a good deal. The new Fox carb is problem free. Only down side is that their stock muffler is on the loud side. If you have a sound limit at your field like I do then you may need to rig up a better muffler. www.foxmanufacturing.com Their website is not great, call them for details. They are very helpful.