Quote: What about getting a different pump , something like an aeromotive that would easily mount in the area above the axle ?
Agreed. That Mallory is enormous.
But if you must use the Mallory, I'm sure the slight angle you've shown wouldn't be a problem. I've seen people mount Holley Blue pumps completely upside down (opposite of what the directions say), and they still work fine. I'm sure 30 degrees won't affect it.