@TPISy-C10.
Where did, or rather, what did that bar come off of? It's to big to come off a Surburban, theirs is a 3/4", crappy bar it wouldn't hold down a chicken coup. That looks like at least a 1"
@Snoots,
Call one of these places unless you know something here will fit a Blazer. Here's where you want to go. "Hellwig" has just about everything for most years pickups, etc.. I'm getting one for my truck. For my '74 it comes in 1" p/n 7726, '73-83 C10/C20 2wd, '73-85 Surburban 2wd/4wd., $500.10, p/n 7437 1 1/8" for '73-83 K10/K20 pickup 4wd. $296.34, Their ph. no. is 1-800-435-5944, 1-877-774-6473
Addco p/n 202 1", p/n 576 1 1/8" $186.77 kit
POL '73-'87 Chevy/GMC truck rear sway bar kit for C10/C20/GMC C15 (I don't have a p/n look at POL's site)
Beltech p/n 5508 '75-'86 C10 1 1/8" diam., can also see at "Andy's Autosport" andysautosport.com for $249.00
Addco p/n K1-396-OU-243 for Chevy Suburban & Yukon XL 4wd K10, 1500, '73-'91 rear 1" $196.11
Check with Western Chassis to.
Also you can look at "Cognito" at cognitomotorsports.com rear p/n 110-90257 1.3" diam. kit
The only reason why I had this handy is because I built a folder of this kind of stuff for my truck and I reached right down to it. Otherwise I'd have to be looking this stuff up one thing at a time. I've done all the work already. Enjoy! And there are more places.