Just dbl. checked my measurements and its closer to 2.5" lower than stock. I currently have 14" wheels on the car just for rollers, so will not show how it will actually sit.

how much room do you figure you need between the top of the 3rd link and the trunk floor for full movement of the suspension? I am not crazy about cutting the floor on mine...trying to visualize if the rear seats would still work and the cut out would just be behind that hole on a 67 fastback.

It would be pretty close. Like I said , if you're going anything less than stock height, you will probably have to notch the trunk. I didn't know this when I originally got the 3link, Shaun , from SoT said , I should not have to do it on a 65-66 and it's more likely on the later models, but my argument was they are the same floor pan (and I didn't think lowering it 2.5" was drastic). I saw 67-68's that had it done , but were still able to get the seat in the car and use the trunk access panel.
I was not originally pleased that we had to cut the floor , but I was pretty sure I was not going to use a back seat with the DSE wheel tubs taking up some area, too much mods for the fold down seat. So it wasn't so bad after all said and done.

yes I had even asked Shaun about this...he said the notch out was for 69-70 models. My rear tires have no wheel gap...not tucked but no gap...so i have no idea how much lower that is then stock (my guess is at least a 1 inch).

What would be you 2nd choice after this 3 link? Chassis works 4 link or Ride techs 4 link are both hundreds cheaper then the this 3 link...but I am sold on the Bilstein after running a summer on the front coil-overs.

Ride tech is very nice and was one of my choices. I thought the SoT 3 link fit the bill better because I had thought to do something similar with the help of Dave from GenII, but decided it would be cheaper in cost after all the r&d work that was needed. In the long run after all the fabs we had to do, it was probably close to breaking even (small savings), if I had done my own, but I am happy with it.

Update
 

Haven't had time to do much, other than get my motor back from Borowski racing and work on a little plumbing for the brakes and fuel.
Did pick up my new drive shaft and can't believe how beautiful it is. Don't know whether to put it on the car or the wall. Had to share.

That looks awesome! I'm in Chicago as well.

Thanks.
SW subs for me. Moved from city 1st chance I had.
Are you in 004 , my brother was there, tens years back?

I am. I've been here a long time.

It looks awesome . I don't know if you already posted, who made the drive shaft?