You can bolt them in if you drill some holes in the floor they are not like thr 73 up truck brackets they are totally different but the Blazers floor is flat,if needed i can get a pic of my 79 Blazers floor,and its seets i took them out of a 76 Pickup but used the Blazer seat Brackets.the driver side appears to be identical to the 69-72 bucket seat tracks,but the passanger side is suppose to be stationary and has metal fixed brackets.
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