Garage Find 1968 Barracuda Convertible, 318, auto
here's what a LD4B looks like.
with paint, you'd hardly know it was aftermarket. but they're a great piece and while they do come up from time to time expect to spend real money for one in decent shape.
personally, for a 318 build that you're trying to keep incognito i'd buy a performer because it matches the 318 ports better, they come up much more often and you can pick one up for a fraction of the price. then just grind off the lettering if you feel so inclined. but honestly, painted the same as the motor only a trainspotter would know.