maybe you can swap in an s10 rear disc onto your Camaro diff. check this out. dunno if it totally relates but talks about 2nd gen swap to s10 discs. should be able to find some s10's at pick n pull and maybe even grab the whole thing for parts. it also talks about ebrake connections and what backing plates to use for what, eg 4x4 or 2wd right and left applications. maybe worth a look. good luck.
http://nastyz28.com/threads/blazer-s10-rear-disc.94303/