A ): ▁Am ateur ▁and ▁Ex pert ▁d ) ▁Cob alt ▁ 1 2 / 1 5 : ▁Am ateur ▁and ▁Ex pert ▁e ) ▁Group ▁ 2 7 : ▁Am ateur ▁and ▁Ex pert ▁f ) ▁Group ▁ 2 7 ▁Light : ▁Rest rict ed ▁single ▁class ▁of ▁Group ▁ 2 7 ▁racing ▁g ) ▁Group ▁ 7 ▁( open ): ▁Sem i - Pro ▁and ▁Pro ▁There ▁is ▁also ▁a ▁class ▁in ▁its ▁gen esis ▁called ▁" One ▁Motor ▁Open " ▁that ▁is ▁similar ▁to ▁Group ▁ 7 ▁with ▁the ▁difference ▁being ▁that ▁motor ▁changes ▁after ▁te ch ▁are ▁not ▁allowed . ▁ ▁US RA ▁division ▁ 2 ▁a ) ▁Group ▁ 1 0 ▁Stock ▁Car ▁b ) ▁J RL ▁c ) ▁G TP ▁d ) ▁GT - 1 ▁e ) ▁GT - 1 2 ▁f ) ▁C - 1 2 e ▁g ) ▁ 1 / 3 2 ▁F - 1 ▁Eu ros port ▁h ) ▁ 1 / 3 2 ▁Eu ros port ▁i ) ▁ 1 / 2 4 ▁Eu ros port ▁ ▁US RA ▁division ▁ 3 : ▁( pro posed ) ▁a ) ▁N ost alg ia ▁Can - Am ▁b ) ▁V int age ▁NAS C AR ▁c ) ▁N ost alg ia ▁F 1 ▁d ) ▁N ost alg ia ▁Le M ans ▁Coupe ▁e ) ▁Can - Am ▁Pro ▁( angle w inder ) ▁Note : ▁in ▁spite ▁of ▁the ▁US RA ▁not ▁yet ▁recogn izing ▁" Div ision ▁ 3 ", ▁independent