Looking to see if anyone knows (even a rough estimate) of the stock ride height for a 1971 Buick GS base 350, no a/c.

I've looked but I can't find anything anywhere. I know I need to replace my front coils and shocks for sure. I'm getting a lot of bounce, so I figure I may as well do the backs while I'm at it.

I posted some pics in my album. My end goal is for more of a mild east coast rat fink stance that doesn't look stupid. I need to know where the car is supposed to sit before I make any decisions on how I want to raise the back up a bit.

Thanks!
- Storm