I'm 56 yrs old and my 1st engine was a 318 I modified that engine with 340/360 intake carb and headers and it was a dog compared to the 318 small port intake on the current 318 in the Chally vert., I've owned many 318's in my 30 yrs of driving mopars and a big port intake on a 318 sucks. I know from experience.