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2009 BMW 335i, 2003 Corvette cnv, 2001 Jaguar XK cnv, 1985 MB 380SE (the best of the lot)
If you have any information on the Hennesey suite of modifications - particularly a website - I would love to see it! I haven't heard that name mentioned when discussing XJR improvements. Are they new at this, or a small shop? Arden of Germany (http://www.arden.de) seems like the leader in Jaguar improvements. However, getting their engine and exhaust modifications is almost impossible state-side. The other outfit is http://paramount-performance.com. They too seem to have their act together. Either one of these establishments would be prohibitively expensive for me. Paramount isn't good about returning voice calls or e-mail. Eurotek (http://eurotekdesigns.com) imports some of the Arden, Ritter and Carlsson components for installation in the U.S. The other thing I found out about the Arden engine modifications is that it generally requires high octance fuel (~98) that would interfere with some of the engine electronics on U.S. specification vehicles.
What do you know about Hennessey???
Thanks in advance...
Seems pretty similar to the other stuff you listed. Again, I am a bit suspicious about simply boosting the charger some more - if the additional horsepower comes at the cost of low-end torque, it's not worth it, in my opinion. The souped up interiors of the Paramount modifications seem pretty darn awesome, though. Pity Jaguar as a whole does not have some division that customizes cars some - the personalization market seems a bit lacking.
From what I have seen/heard on the net. The 2003 will be using a 450hp engine. It could very well be the same one as the SL55. It is getting someother stuff the SL55 has as well.
Heres the most recent spy shots/info
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