An interesting conversation erupted in Andrew’s post about the 2003 BMW 540i M-Sport yesterday. Andrew suggested that the E39 was not only the best looking 5-series, but perhaps the best looking sedan ever produced. I think for many that opinion will depend on the generation that they grew up in; for example, I bet you could find some folks who would contend that the early fourth generation Lincoln Continental (early 60s) or even the Bugatti Royale was better looking. But taking a break from arguing the best looking ever, how about within the 5-series? There are a lot of E28 fans out there, our own author Nate being one since he owns a M5. I grew up with a ’88 M5 in the family, too – but for me the E28, while a definitive and landmark step for BMW, was not as “pretty” as the E12 which preceded it. That’s especially true of the early E12s, but in terms of motivation there aren’t many that can match the punch of the later M5 and 540i models. To solve that problem, one owner took the pretty look of a 1979 Euro-market 520i but ditched the M20 inline-6, replacing it with a Dinan built 3.9 M30 with accompanying upgrades. The result is certainly impressive: