Did I do ok on this?

B - Caravelle, Barracuda
H - High
29 - 2 door, coupe / special
P - 340-4 1968-69
9 - Last digit of year
B - Hamtramck
sure does decode as a 340 car, the damage is done at this point though as you're not likely to find the original #'s engine (never say never but..) so it's a non numbers matching 69 Barracuda with a hole in the hood, that needs work ~~ you and 100's like you! 318's are GREAT street engines and it appears that the one you have has been modified.. I say freshen things up as needed, do the body up and get it squirted whatever color works for you (if you want to make it look original, do it) and enjoy YOUR car. If you get lucky someday and do find the original 340 THEN maybe consider spending the time and money to do a proper restoration.. for now though, it sounds like you're on the right track, save the car!