Board Thread:General Discussion/@comment-28698377-20160609081533/@comment-28328990-20160621231035

To unlock the 10 lapper, the Porsche 919 needs to have PR 94 so that you have enough trophies to unlock it. Do a gold upgrade on body, suspension and tires for a total of 80 gold to reach PR 94. Upgrades should look like this - 2232222 with 15/23.

If R$ is not an issue, just buy it without discount. Unless you have other cars in Vertex series other than the P1, you won't have a showcase discount. To unlock the bonus series which i assume is the hybrid hypercar clash, you need 6 trophies in Vertex.