You asked about comparing to a SVT Lightning. I assume you are talking straight line acceleration. I have owned 2 SVT Lightnings and currently own the 4.8is. The SVT is faster and easier to make real fast with the blower/chip/pulleys. I will admit I am very pleased when I give the 4.8 some gas. It has great torque and really moves. I do wish there were some mods that could make the 4.8 even more fun but my experience is most naturally aspired engines aren't easy to make go fast parts.