Combien de chevaux elle sort ta charette Lorenzeus?

http://forum.miata.net/vb/showthread.php?t=129400&highlight=mazda

Mazda optimized the K-Series V6 engines within an inch of their life for front-drive use and solely front-drive use, designing it to be set at an angle to lower the cars hoodline by tipping the engine forward. As a result all of the internal oiling passages were designed for angled installation. In a Miata this would provide insufficient clearance for the exhaust system on the 'low' side.

Tipping the engine back to the vertical causes oil starvation problems to the crankshaft resulting in spun bearings and worse. The idea has been experimentally tried by Mazda as well as for a US developed Solo I car, and the bottom end problems were experienced by all who've attempted it.
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pressure loss to the main bearings(the first thing to get oil from the pump) because the pump runs dry because the pickup doesn't stay submerged in oil because the oil drain ports from the heads can't return the oil to the pan as quickly as it's pumped to them.