I think his second post at 4:something dark thirty AM was an appology of a sort. In any case the 383 4 bbl A/C cars all had blue 330 HP engines B and E body cars 69 & 70 and were not stamped HP. I believe it had a different cam because of the A/C? I don't know about 71's? I have a 69 4 speed Barracuda fastback with A/C. Apparently they did not list different horse power ratings for the 340's with A/C and non A/C. I guess that means my 340 with A/c is an HP and your 383 with A/C is a non HP. Does it really matter. It's a cool car. When you rebuild it, just change the rear ratio, add a little cam and blue print it a little and fool those 335 HP guys with your blue A/C engine sleeper!