Hi Phil,
Thanks for the link!
Thought about having the Blazer housing and axles narrowed, but is very expensive from what I've been told.
After some research, I came up with a solution I think:
Isuzu pickups came stock with a 5.5" on six lug bolt pattern, the same as GM trucks up until the mid 60's.
You might say "yuck, a Jap axle under a domestic truck!" Well, some of these trucks,(the US made ones only), in the 90's came with GM 10-bolt axles from the factory. I happen to have a GM-10 bolt rear axle under the C8 at the moment.
Measured my screwed up original C8 axle and it is only 1/4 inch wider than the Isuzu ones, and they're plentiful and only about $150 complete at the local wrecking yards. Can even use my current driveshaft. Will have to cut and reposition the spring perches to fit the C8, though.
Am going tomorrow to pick one up and we'll see.... it's only time and money.

Thanks, David