Yes David, This is very true. The 65/66 GT were available in Automatic, but the engine was a 225 hp 289 4v, not the 271 Hp 289., My build will be a 4 spd , but just a Mustang Sports roof, unless I can find a source for all the GT parts, (rear Valance, GT grill, and the trumpet exhaust tips). Which I made some Exhaust tips from Aluminum tubing for my 66 GT Convertible build.