Just run the intake you have you will not notice anything. I ran that exact combo for years on my 87 Diplomat. All this runner mismatch hype is nothing but turd polishing on a relatively stock 318. You'd notice more putting in a 340 cam and that would be a better place to spend your money.

They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.