Not a perfect comparison, but look at SS/AH class. There you have 727 cases with 904 guts and every trick rollerbearing known to man. Very very efficent converters and transmissions. You also have 4spd stick cars there. I'm not sure what stick they are, but they are still a stick.

The stick cars are a little lighter weight, so it's not a perfect comparison at all.

Stick cars out MPH the 904's, and they are at about the same ET....right now.