Talk:Vertex Series/@comment-5.43.6.122-20150706073720/@comment-26249703-20150706093721

P1 is cheapest to upgrade to minimum PR when combined with Hybrid Hypercar Clash. You'll still need all the cars to complete 100% because of showcase events, though. To get to PR:85, I recommend all upgrades on P1 except for the last engine and body upgrades, at a cost of 375 GC. You shouldn't struggle too much with that set-up. Hope that helps.