1978 318

A 318 specific 4 barrel intake with a 1901 holley street demon well tuned, a free flowing exhaust and a well curved hot ignition system will do wonders for a 318. Will it be a 440? No.

I have an e48 318 with a 1901 street demon carb but otherwise stock in my 1984 W100 with a 727 (no stall), 3.55 gears and 33 in tires. It runs great, not 440 great but surprisingly good.

It really depends on how much you want to spend and what condition your 318 is in.