I'll add some carb adapter information here. To start off, back in 1976 when I got my 68 GTS 340, I had to rebuild the engine-just a rering, valve job and a Hemi grind cam. When I got the car it had some ancient little Holley carb on it. I found an original Edelbrock Torker, an adapter and a 850 TQ. It ran hard for what it was, considering I didn't know **** about tuning and such. It always had this loud whistle at idle and lower rpms. My friends said they could always hear me coming even a quarter of a mile away. They called me Whistling Dixie. Some years later I picked up another adapter, and noticed that it worked with the TQ a lot better, no more whistle. I have some pictures, If anyone has any questions-fire away.
