I like the idea of reinterpreting a car. Marketing, homologation rules and industrial processes make that a car is not necessarily the way a designing team would have liked it to be. In the case of the E-Type, I find the original to have a too narrow track and I find the shape and the chrome surround of the headlight covers a bit strange. Both have been corrected on the Eagle speedster. I've never owned or even driven an E-type, but I find it's shape astounding, especially the Coupe. I also like the fact that it was offering design and performance at a fraction of the price of its competition.
From articles I read the Eagle 4.7L 6 cylinder engine seems to be absolutely fantastic. However, I hope Eagle will develop a 12 cylinder version of the Speedster. Not that I will be able to afford one, but Jaguar is among the rare brands which offered a 12 cylinder engine on the market, including in the E-type. It has an aluminum block, and has a good development potential. It was also originally developed to race at Le Mans. Proteus already developed some replicas of the XJ 13, and was also offering as a kit. I don't know if they are still in business :
http://www.youtube.com/watch?v=B_HG5Ak0FHothe Jaguar v12 can certainly do the job:
http://www.youtube.com/watch?v=if2j6yqZg0Q