Montoya, who won the Indy 500 with Chip Ganassi Racing in 2000 and Team Penske in 2015 – the longest gap between two wins – was confirmed last December as Arrow McLaren SP’s extra driver for Indy, joining IndyCar fulltimers Pato O’Ward and Felix Rosenqvist. There remains the possibility of the 1999 CART Indy car…