[Paul Ceasrine]

Steve,,,,,,,,

Thanks,,,,,,,,,,I have to lock on the NHRA Classification Guide,,,,,,,,

From what I gather,,,,,,,going back to 1968.

In 1968, the Cyclone GT 'fastback' with the 428, was classed in;

E/Stock (10.00 to 10.49 Wt/Hp) with the standard 428/335 HP
D/Stock (9.50 to 9.99 Wt/Hp) with the 428/335 HP Ram-Air 'option'

Of course the NHRA re-factored the 428/335 HP Ram-Air to 355 HP.

The 1968 Cyclone GT 'fastback' with the 390/325 HP was classed in;

F/Stock (10.50 to 10.99 Wt/Hp).

This was based upon a shipping weight of #3487 lbs.
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The very rare 1968 Cyclone GT, with the 427/390 HP 'Wedge', with a single 4-barrel was classed in;

C/Stock (9.00 to 9.49 Wt/Hp)