Thats the intake I have on my '69 Charger. 440/auto, .040" over, 10to1 comp, iron heads with big valves, Comp Cams hydraulic .507"/.510" cam, TTI 1-7/8" headers and 3" exhaust, and a BG 750 carb. All steel car, probably about 38-3900lb race weight. Went 12.20s with slicks and 4.10s. Also went 12.80s with 3.23s and regular street tires. Good intake, no problems on the street.