Floppy, in the past I owned a sportscar specialist garage and to me there is nothing more rewarding than putting a pile of hard work into an engine and getting it run sweet and perform well. Have a look around the forums and do a seach on performance parts, I have seen a few sites dedicated to that car. In respect to platignum plugs, two years ago when my Pontiac had just done 12,000 miles I fitted platignum plugs and slick50 engine treatment, I can't tell you how much the petrol consumption went down in exact figures But.. a trip to the airport used to take a full tank there and back and afterwards it was down to a little over half a tank, both my wife and myself noticed how smooth the engine was, I whole heartedly recommend platignum plugs.
On a side note while out on my travels the other day I came across a Big Cat sitting on the end of a guys drive with a for sale sign in the window, he wasn't about but a neighbour told me he was looking for about $4500 for it, that is about $10,000 less than what it is worth, at 10 miles to the gallon I guess he can no longer afford to run it and nobody else want's it, lets see, give it a week or two and I think I might snatch his arm off at the elbow for it.
For any body that doesn't know, the Big Cat is a 5.1 litre fuel injected V12 Jaguar XJS.