Ok I have a 66 mustang. Its all stock. It has a 289 2v and tranny is a auto...is this a c4 tranny? Id like to know so I can get a price on a rebuild and figure what torque converter to get. Also does anyone know where to get a 2bbl that bolts on and will work with the factory kick down? Im just gonna build a cruiser car. If I did decide to go with a 4bbl setup would a 500cfm edelbrock be fine? I would think a 600cfm would be too big on a stock 289?