Here what I've found:
It's form P&L Racing homepage here in Italy.
http://www.plracing.com/volumetrici.htm I know nothing and they didn't wrote anything about this car on their webpage...
maybe I can contact them for more infos... it's bad that they don't have published some numbers... P&L Racing have their central workshop in California, but I can't find it in internet.
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It doesn't seem too difficult to replicate it using a standard intercooler, just some weeks of work...
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What do you think?