2005 Baja 275 with factory installed 525 in looking at pulling the motor this winter and was told I possibly have the old style CMI headers how can a person tell the difference in to two? and if I do have the old style I'm looking to change them out and doing away with captain choice as I don't use it enough whats everyone's opinions on headers and best place to get them.?

They will have a date stamp om them

Thank you for the information greatly appreciate it.