Since there is a sale on upgrades I upgraded this enough to be able to complete the series Muscle and Prestige in Expert. But I'm stuck on the one race (16.1) at Laguna earlier in the series. It's a 5 lapper and it's very tough to get near the lead. I can get to 2nd place but still can't get first. I don't wanna upgrade more than I have to because the car I don't really need outside this series. Any way to slow down other cars or tips on this race?