I have had 14 blazers and i have never seen one with a third seat in the middle of the buckets.
i have seen a bench seat fitted in the front of a blazer, but then the kids have to climb over it to get in the back, and cops dont like that its not stock and depending on cop you could get a safety inspection notice.
yes blazers had consoles in between buckets, yes they are getting harder to find, i have one for sale
I want $60 canadian