I know it's an 08 jaguar XKR and all, but I wanted to know if jaguar would ever do engine swaps. Like i have the 4.2L 420 hp engine, and the 2010 models are going to have some next gen supercharger engine with 5.0L 510 hp engine, and i would just like to know if jaguar would put the 5.0l in my 08 or would i have to buy a brand new jag? Because my Brother told me if i just modified the engine for more hp and stuff, it voids the transmission and engine warranty with jag. And the other question is if i get a exhaust upgrade from paramount or quicksilver, does it void any warranty with jaguar?