Ok, for the tabs, you can try looking at the Chevy S10, or the GMC Sonoma assembly, since they are essentially the same truck. They have the same core support, and everything else. I think the 1998 -03 Sonoma would be your best bet.
Scavenged the junkyards for anything similar to the stock headlight setup. The most similar headlight was to a 2000 Honda Passport, and Rodeo, but the mounting points are way different
. I'm sure you can make brackets and get them to work.
However, since I am in the same predicament, and in the research and fabrication mood
, I think I'm just going to have to make my own headlights. I'll post pictures when I'm finished.