Hey guys, this is my first post on the forum. I'm looking for some advice on adding a little pep to my wife car. It's a 74 barracuda with a 318 and an automatic. She has had the car since she was 18 she bought it from her grandpa with 60,000 miles on the clock. Now it sits at 67,000 the motor runs good, but has a terrible bog down low. Her grandpa had some do some work to it and for some reason they threw on a Mopar Performance high rise single plane intake manifold and a holley 750 cfm carb. This combo kinda leaves me scratching my head for an otherwise stock top end??? either way it is a complete DOG down low! Ok so my question to you is, she wants a mild build and kinda likes the low miles 318. Ive been told to put 360 heads on it but it already has low compression so they would need to be milled. Just wondering if i would be better off porting the 318 heads myself and going with an edlebrock performer intake and 600cfm carb and headers, possibly a small cam??? Thanks in advance everyone!