Valley Industries is a manufacturer of Trailer Hitches. They make a hitch for your Maxima. Here is the info from their web site
www.valleyindustries.com. Item Number: 59220
Brand: VALLEY
Category: Hitches and Receivers
Sub Category: Class I Receiver Hitches
Description: Hitch-Class I Receiver, 2000 lbs Rating, No Drilling Required
I sell Truck accessories on the side for my friends here in Central Florida at Cost plus 10%. Valley Industries is sold by major retailers nationwide like Sam's Wholesale Club, Tractor Supply and most 4X4 Shops. The one on my truck took a 20mph impact from a 96 caprice classic and had no damage to it so I am confident saying they are stout! If you can't find anything locally at a fair price Let me know and I'll see if I can help you out. FYI... I prefer Air Bags to Air Shocks. You can get Air Bags from any reputable 4X4 shop OR any RV shop. They put them on Pickups to help them stay level when Loaded down with their Campers. They are a much safer way to equalize the load and keep your suspension working correctly. Good Luck.