[SilverMiner]

One thing I forgot to mention - don't discount the utility of the factory optional roof racks for the Blazer. You didn't mention what your intended purpose was, but unless it involves ridiculously heavy or tall items you should be fine using a factory rack. I see plenty in the junk yards that I frequent in my area, and they aren't hard to install. Any from 76 on through the end of the run in 91 will work fine, and I happen to think they look better than the homemade ones as well.