Hi,
In WA we used to have the 1hp rule but now we run any .12 3 port pullstart engine (no hybrids) and also any standard RTR car with the standard kit engine. We get a lot of Kyosho FW-05/06's and V-one S2 and 3's aswell as a few NTC3's (current WA champ) I used to run Hobao GPX-4 with the kit Hyper 12 and it was quite competative.