The simple way would be remove shafts from front drive shafts but leave CV joints and weld up centre diff. But hardly any weight saving. And handling is not that great mostly because engine is way up front and front wheels further down to back on Audi compared to BMW not because it's 4WD or weight.
The main reason I stick to Audi is quattro and while it could be a bit of fun to kick out the rear with RWD for daily driver 4WD all the way.
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Currently 8less
2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D
8 history:
2006 A8 Sport 4.2TDI quattro SOLD,
1997 S8, reached end of life with gearbox failure
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