Here’s a new video featuring Prospeed’s Bulgarian 2011 Hillclimb Championship-winning Audi in action at this year’s Kyustendil round. Once again piloted by Nikolay Zlatkov, this Sport quattro S1 replica, which was built from a humble Coupe bodyshell, is churning out over 800 hp – and it certainly sounds like it. Be sure to put some earplugs in if you turn your speakers up…
Prospeed Audi quattro at Kyustendil [video]
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