LD340 mod with TQ

Tkanks for the information did you cut down the center runner? the intake i have has a notch in the runner which looks stock to me for balance. What was the 340 build you used this on i want ot acheive 450 hp and was wondering if a 408 kit was reqiured. I have a stock 1971 340 with x heads never disasembled virgin motor. It was given to me by an old man that had it garaged for 25 years....would appreciate some advice would be nice to stay with standard rotating assembly
Joe

oh only 2 pics were sent