1972 340 4 spd Demon GA4 (sizzler ?)

The Sizzler package was the 340 look without the 340. They were Slant 6s and 318s only. Your car, being an H code, is a 340 Demon. That’s way better than a Sizzler in my opinion.
H code is better than the Sizzler any day and you can still have the stripe if you wish. Does the car still have the 340 in it?