I have my doubts over the competitiveness of both versions of the laughingly named Dastardly - for the newer one, is it really worth getting a 0-60 time of 5.6 seconds when the fuel economy and reliability are so low? For the older one, 7.1 seconds isn't quite as pathetic, and 140+ mph is quite decent for its time. The Cunning, on the other hand, ought to be much better in all respects when compared to contemporary real-life equivalents. At least all three of these coupes look good enough for some unwary buyer to consider them.
As for the revised '90 model, it's more of a rival to contemporary imports with its turbo I4, and commendably more economical (though not by much) - but it needs to be faster at the top end, and a change in gear ratios should do the trick. But it's almost a full second quicker to 60, so you may be making an improvement in some areas after all.