So is your Civic the "King" car?
The way I read Jamaican forum chat, that appeared to be a Mar(c)k Viera project.
It looks like Australian club racing is very similar to your activity. You may be able to secure a little more commercial sponsorship because it appears that your club racing is "The" racing. V8 Supercars in Australia has grown to be more "professional" than perhaps our economy/market can ultimately bear. It is unashamedly run as an entertainment rather than a technical sport. As the only motorsport in Australia that gets regular live commercial TV time, it absorbs almost all available sponsorship.
We have more interesting categories from the engineering stance. These rely on largely scarce private wealth and obsessed owner/drivers.
I suppose, however, that to take your "product" to several regional circuits is more expensive as it involves more than road transport. Even if the R-T thermocouple amplifier is over-priced, we are lucky that the DL1 offers such great value for money. Nevertheless, I battle with the perception in local club racing that Data is too expensive for amateurs.
Whatever level of outside funding you may benefit from, I see that as appears to be the case all over the world, the sport would not exist without many volunteers. Well done for managing to contribute in that area too.
Does an SCCA history imply that you don't love cricket?