You should support the companies and people who support the class.
Desoto Racing - Serpent America, importers of Novarossi on-road engines, are working hard to promote GT racing. We promote the class every chance we get. For example, we will have the class at the Novarossi Challenge in CT on July 4th. Also, we got the GT class back into the Florida State Series with 4 great tracks and racing all year round. Anyone wanting to race GT can come down to Florida and joins us (Homestead, Ft. Myers, Kissimmee & Arcadia).
The N21-3T or N21-5T are great long lasting engines are at a low cost.
On a typical race weekend you'll need:
entry fee, $20-30
a gallon of fuel, $25
1-2 sets of tires, $60-120
travel, ???
wear & tear on car, ???
A good engine will last 10+ gallons with proper care and maintenance. A low quality engine 1-2 gallons if you are lucky. So an Nova N21 engine will cost you $22-25 per race. Which is equal to or less than most other parts of your car.
BTW I don't see any other engine company supporting this class.