Specs and Regs

Hello, I am trying to get started in dirt circle track racing but i cant find anywhere with the classifications for each class of car. i would appreatiate any info you could give me or even a point in the right direction, thanks.  

By "classifications" I presume you are refering to the specifications and rules regarding a particular class or division of car. This is a very broad subject and unless you are talking about a specific sanctioning body (such as IMCA and ARCA),it varies from track to track, sanctioning body to sanctioning body and region to region. You need to get a copy of the rules of the track or tracks you will be competing at. Each track publishes the rules and specifications governing each class of car that competes at that track. These rules are quite often available on the internet at the race track's web site.  
Hobby Stock #45j