540i sounds brilliant, but that's it. The weight kills the fun a large bit. drifting f*cks up the suspension and all bushings, tyres, brakes and so on, so keep the weight down. A big engine isn't everything. The M60/62 engine has also a lot more expensive issues than the M50/52. The 60's aren't bulletproof at all. But it's a great daily though. It can drift but I don't really wants to.