Slightly unrelated to Lotus Exiges, I grant you, but their new V8 will* fit inside a Lotus, so . . .
http://www.radicalsportscars.com/media/evo_sr8_driven/index.php
Autosport article: http://www.radicalsportscars.com/news_folder/autosport_marcus_pye_100205/index_media.php
Here’s a price list along with a couple of graphs: http://rapidshare.de/files/685014/PowertecRPAMacroblockV8pricelistissue1.pdf.html (Don’t think this is on their website yet.) Click on “Free”, then you’ll see the link at the bottom of the next page to download the PDF file.
*they said in an email that they’d tried fitting it into a 340R and it did fit