User blog comment:SlatBH/Route to Endurance Legends/@comment-39641350-20190929065713

There are few more changes, according to Zenith Series comments, it seems that we must buy another car to unlock RTLM and accourding to RR3 Wiki:Upgrades Strategy For 100% Completion under Partial column it shows that we must upgrade Zonda R to 4322222 for 75 gold and 2,440,300 RS. Getting Zonda R will cost 320 gold with discount. So total 351 Gold Spent.

In Vertex, PR of only 80 is required (again according to comments) and we must buy the Renault to play its showcase for one trophy. P1 can be upgraded for 78 Gold. So total 34 Gold Spent in vertex