Quick question for the forum..... I bought my '67 GTX with a '68 383 in it. I am trying to determine if the trans was also swapped in at some time or is it the one that could have come in the car from the factory. Doing a little digging on the 2801540 shows that it was '67-'68 but "without high performance". I assume all the GTXs with 440s were the C440 HP and the trans should also be HP? Thanks, Eric