Advice for 13.5t brushless. Brca legal.

[Pedders]

I'm just getting back into touring cars and would like to update my esc and motor to brushless.
I'm looking at updating the esc to a hobbywing extreme stock on recomendation from members at the local club. I don't know however which motor to buy.

I wish it to be brca legal as may enter a championship next year and don't want to have to buy new ones all the time. Any ideas or experiance will be appreciated.

Pedders