The Spartan Sirius was introduced in 2004 and is still in production today as an exclusive cab for Smeal Fire Apparatus and SVI Trucks. The cab was originally built on a Gladiator platform with a redesigned front end by Smeal and was exclusive to Smeal only but has since changed. The Sirius is currently available in Gladiator or Metro Star chassis specifications, thus being dubbed as the Spartan Gladiator Sirius or Spartan Metro Star Sirius or even Smeal Sirius for Smeal apparatus. It still shares many of the same features as the Gladiator or Metro Star such as,