Snooping around a bit, it seems like Moog 5660 S-10 springs
might give you about a 1" drop. They're a good bit stiffer, which is probably a good thing since you won't want to be bottoming out. It's almost impossible to tell if they'll actually lower it though. If your stockers are really saggy, it might not help at
all.
Moog Springs for High Performance Monte Carlo and G bodies
The Monte Carlo Mailing List: Tech Articles
This place has them for about $52 a pair...
MOOG Auto Parts
If the weather's decent this coming weekend, I might head to the local U-Pull-It and see if I can grab some off of an S-10. There's always tons of them there, but getting something like that off of a truck with a little box of hand tools would probably be impossible, seeing that you're not allowed to use jacks. I just got lucky on the rear coils I bought, there was a mid 80's Firebird sitting there propped up on tires with the rear end just hanging in the air, lol...
I might just suck it up and buy new 5660's, put them on, and see where it sits. If I'm not happy with it, I'll start cutting them little by little until I get it where I want