20: Porsche 944
Released at a time when Porsche was in a transitional phase, the 944 is in a league of its own. This Porsche is not like the usual variations with rear-engined design. Instead, the 944 was a front-engined Porsche with a hatchback and a backseat. It was everything you wanted and pretty much nothing you needed. Still, the 944 has been developing a loyal following in the afterlife with a ton of aftermarket accessories available.
The V8 version is fun to modify and make into a road car, while the turbocharged four-cylinder variation is also popular. The 944 is cheap to maintain and parts are easy to come by because these were sold for decades. You could find a variant of the 944 into the 1990s, which gives buyers a wide spectrum of model years to play around with.