MPP m1 vs edelbrock air gap

Yea man, tough call. There have been a few members here right at your level area and they have tried the switch. At this juncture, it’s all in the, well, everything about the car. It’s more than just the engine combo. Though of course that’s a lot....
Anyways..... some guys went faster, others have slowed down.
Could you borrow one?

The RPM will make more torque and I’d say until 4-4.5K
The M1 is a screamer all the way up afterwards.
You might do better with more cam & gear to get that single plane working better/best.

Try the rpm if you know someone with one sitting. It’s worth the try. Then you’ll know if it’s worth the expense.
Good luck.