Muscat - Fresh from his first podium finish of the GT World Challenge Europe powered by AWS Endurance Cup season just three weeks ago at Monza in Italy, Oman’s Ahmad Al Harthy is resolute in his aim to build on that momentum going into this weekend’s huge Crowdstrike 24 Hours of Spa. Round three of the campaign at the unmistakable Spa-Francorchamps in Belgium is the biggest race of the year in GTWCE, in fact it’s the absolute crown jewel event in global GT3 endurance racing with a grid of 70 cars in total. “It’s amazing to be back at Spa this week for the 24 hours, it is by far the biggest GT3 race in the world and an event…