LD340 MODIFICATION OR NOT?

Don't ruin the intake ! get a spacer and modify it. Or buy another intake. The LD's are to rare and work great as they are.
I agree. But I would still fix that carb flange. The divider is usually thicker to one side and hangs into one side of the barrels a hair and it's not Square end to end or side to side. Same on the port windows.