I think promotors are missing a opportunity to groom they're racers for the 410 class. Here they run the crate 602 modifieds as a support class to the modifieds. It works perfect less than 4 grand for a brand new sealed long block, 4500.00 for a perfect roller. 10 grand for a winning car complete. 7 grand less than a new minisprint. When a guy is ready to move up all he needs is a engine. he has everything else including experience setting up the car, ect. Thats one of the reasons theres plenty of mods in the pits every weekend.
You could easily do the same for the sprintcar class. no need for 20-30 grand 305's and 360's or whatever. The engines are also long lasting, I know of a couple that are running the same engine for over two full seasons, a little tired but still running. Then you could have two Sprintcar classes every weekend. By the looks of the polls thats what people like.