Heres the link to the upper arms I got.
Fits 2WD Models Only.
www.ebay.com
They list for Blazer/S10 but theyre the same. Bought the same setup for the lowers and had to bore out the mounting hole for the slightly larger bolts but it was worth it. Bought all new hardware to go with it to mount. I cant seem to find the listing for the lowers but they are from ebay as well. Nothing special but compared to what was on there, a very big upgrade. I also used the bump stop from a Blazer as well, I think from an Xtreme trim is what everyone suggests.
Happy to answer any other questions about this setup as well.