Have a buddy with a 72 challenger with a good running stroked 340 making about 500 hp, 391 gears and a slipping 904 trans. He was thinking about rebuilding his current trans but has decided to buy one already done. His current setup is a reverse valve body with 3000 stall converter. He is looking at a complete ready to go trans from ATI Transmissions for about $1,500 and wondering if anyone has any feedback on there units or recommendations for one of the other trans guys out there. He is not easy on his car and would like to see him get one that works well. Car will be mainly local street and highway used, but he is not easy on it, banging gears is the norm. Where should he buy his new transmission?