Talk:Porsche 911 RSR Championship/@comment-27798333-20160518000900/@comment-28256200-20160518050342

Its cheaper be 12 GC but 18 upgrades but you get 2 additional upgrades with R$.

Summary

4414142 - 312 GC 20 upgrades

4224222 - 300 GC 18 upgrades

Choice is yours :)