Re: Who designed the xa /xb series ???
Dont trust the TRUE BLUE book, its FULL of mistakes. (eg: they show a picture of a sidevalve six and call it the "NEW Falcon engine") And the Falcon book calls the GXL a GLX (if its the one Im thinking of)
Otherwise I would have bought them myself when they came out.
1978 XC Fairmont GXL, Emerald green, Jade Int. 351C, 750 VAC, C10, 9" LSD
Air, steer, power windows................