First Diana and Dennis Rodrigues tried adding a particulate filter to their 1997 reefer engine.But it wasn’t CARB approved.Then the Florida trucking family tried to purchase a $24,000 reefer engine to add to the existing trailer.No bank would finance the repower.Finally, the couple purchased a new $58,000 reefer trailer in late May, having been assured by CARB, California EPA and others that