SQ has little to do with power nowadays...I haven't had the chance to review the latest rules for IASCA's next season, but I think they have dropped power classes in some of the local and regional shows.

The only need for power in an SQ car is to hit the SPL cap of 130dB....past that it's all about install, not power. There were some people lobbying for the removal of the SPL section on the score sheet as well.