In case anyone was wondering they are quite a bit shorter than stock. Probably will be more like a 3.5" drop. Didn't think to get before measurements but I'm swapping wheels and tires also so they wouldn't be terribly useful.

 

It might not be as much as you think by comparing the unloaded springs. Below are my old ones and the new ones and the car sits the same height (granted the old springs were sagging after 30+ years, so no idea how high it would have been in 1971).

 

Hopefully I'll find out this weekend. Thrashed on it last weekend and got new exhaust installed, new brakes on all 4, new rear brake lines, booster and master cylinder, alomg with new rubber and wheels. Should have this last spring up tonight. Bleed the new brake system Saturday and get this heap of hot garbage rolling for the first time in many years by Sunday.

 

Brake bleeding went horrible, eventually realized the rear rubber line at the back was the issue and replaced it.

On the ground now. $220 jegs wheels 18x9.5 were to good of a deal even though I wanted a smidge bigger in the back so I went square with 275/40r18 Conti extremecontact02 on all 4. Boxes of crap are getting smaller.

 

The free height of the spring by itself is not an indication of installed ride height unless both springs have exactly the same lbs/inch spring rate. A shorter spring that is stiffer could still have a taller ride height (and a rock-hard ride).