You'll either have to be very patient and check Ebay periodically or you can buy new unfinished bodywork at Airtech Streamlining The Airtech tail section has the seat cowl integrated so that would mean no more passengers unless you try to modify it yourself. Another place you can check is Thurn Motorsports in Germany which is better quality but more expensive. I've included a link below showing the Thurn Stuff fitted on a 4th Gen. LINK Link to Thurn Motorsports Rollin