The Giulia Quadrifoglio is the most underrated platform in the performance sedan space right now. Full stop. Ferrari-derived 2.9L twin-turbo V6, rear-wheel drive, and a chassis that genuinely embarrasses cars costing twice as much. Yet somehow it flies under the radar compared to the usual M3/C63 crowd. That's exactly why it's worth building. Here's what we broke down in this guide: → Why certain model years give you a better starting point (hint: it's about more than just mileage) → The realistic bolt-on path to 550whp without grenading that Getrag transaxle → Wheel and tire specs that clear Brembo 6-pots without looking like you're on stock fitment → The mindset shift from "Alfa owner" to actually having a built car The 2.9 responds incredibly well to basic mods — downpipes, an intercooler upgrade, and a proper tune will wake this thing up in ways that make you question why anyone pays M5 money. But there are pitfalls, especially around fitment. Those massive front brakes and the...