360 Carb input

I have just bought a car with a MoPar 360 crate engine installed. 3K miles on it. Previous owner installed the engine and tells me it is the 380HP model. It has the M1 single plane intake. He has installed a 780 DP Eddie. It has an MSD ignition and headers.
I feel this is too much carb. For this set up. It bogs on instant acceleration.
I have a 650 Holley sitting on the shelf, still in the box.
Input please?
What gears and either converter or trans you have ? I have a 750 holley street avenger on my 340 and it runs great . Air gapp , 3:55 .
Try the 650 should work off the line , top end might be lacking , might .