C6 Chevrolet Corvette Z06 Lingenfelter 660hp Pkg..Pros & Cons?

Even though John Ligenfelter himself has been dead for almost six years, his company has continued to deliver top notch work. If you got the cash to spend on this kind of work, you won't find a better place to have it done. A friend of mine had a John Ligenfelter built 4.3 liter V6 in an S-10 (Corvettes are not all he worked on) that was insane fast, 12 years later and still going strong.