straight 6 jag daimler motor are indeed very strong and can do huge miles,even the box's are tough as old german boots.

i can't picture a arden jag but i do remember the lister lemans xjs v12

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i once saw one forsale say 12 years ago and it was in stoke for 12 grand parked outside a massive country spread and said it cost 75 grand new. the next week i saw it again for 30 grand 100 miles away and i felt kinda gutted they were a genuine 200 mph jag 7 litre v12 twin turbo.