Yep, I did not start B Spec until I was around level 16 in A spec. My B spec is at level 29 now with aLOT of really good cars won through it, so it is totally worth it, win the Zonda and put that 2.6 toward a car like the Peugeot 908 (better car fwiw) or even the Formula GT, you will be glad you did.