I'd be more concerned about the horrible gas mileage you are going to get from doing this. Then again... you already drive a blazer - how much worse can it get!

 

actually, i still get decent mileage...avg 19-20 on highway..so really cant complain.
i have a plan though to get it relocated...just waiting for my vaca at end of month.

 

when i cut up my rear rack and mounted it to the roof, i just used the factory vynil one that came on the truck. worked great.

just be smart enough to put the seam that is usually on the bottom (when on the rear rack mount) @ the back of the truck, so the wind doesn't catch it.