there are so many better tuners out there....
personally I'd look independent....

sure hennessey and ling have the name and can strap 1000hp into a car pretty easily but there's better parts out there if you take the ala carte option with parts from different companies and find a real tuner shop.

gotta say tho both built a pretty big empire on what they did and from a business perspective, can't fault either one for their successes. for the midlife crisis guy that wants a turnkey hot rod to show off they fit the bill. wanna take it and actually use it at at track? go buy a shelby or an SRT if you want something from a big name tuner.

one thing I have always found interesting. ford svt/svo and dodge srt have had successes. gm performance has never really been at the same level. wonder why they never took it inhouse.