Mazda Canada is providing cash to competitors in Ontario Time-Attack for 2017 no matter what class you run in, as long as it is a Mazda or has Mazda power. Cheques have already been sent to 2016 competitors and the 2017 program looks even better.
Check out http://www.casc.on.ca/forums/showthread.php?t=34262
If you are going to come to the track, why not get paid for it?