1. Here are the two seats from Mustang we felt would work best. On top is the Fastback ($319.99), cut low with a deep pocket and good back support for the rider. The seat is tapered in back but still offers a reasonable degree of comfort for a passenger. The DayTripper ($349.99) features the same seat pocket but without the back support sitting so high. It's also about 1-inch wider at the seat nose and 2-inches wider for the passenger.