Was there an e12 m5, i thought the e28 was the 1st m5.
I checked wikipedia and the closest there would be to an e12 m5 is a M535i which would not have been for sale in the us.
Here is the link: Wikipedia 5 series link.
I also checked there for the m5 page and there is no mention of an e12 m5.
But sounds like a cool spoting, did Cameron in Ferris Buelers day off have an e12 that was his POS, i always thought thats what his car looked like.