Thread:RR3 Michael P/@comment-29822143-20161127064904/@comment-25956839-20161127075648

See: RR3 Wiki:Upgrades Strategy For 100% Completion

Available from the Top Menu > Navigation > Strategy > Upgrade Guide (Subjective)

GTE-Pro: Ford and Ferrari needs one car (Ford) to PR89 and the other (Ferrari) to PR90, it is a very expensive bonus series to complete. GTE-Pro: Chevrolet and Porsche has the same format too.