Rear Spring Isolator?
 

Recently purchased an 11 GT that has coilovers and I hate the stiff ride so I'm gonna pull them off and go with some lowering springs and Koni srt's. My question is are there any type of spring isolator or rubber that get used off the stock springs? There is nothing now on my axle except for a plastic piece that the spring would go around

are the coil overs adjustable?

When I installed the Steeda sport springs on my 2011, I had to reuse the factory rear upper and lower rubber spring mounts.

They are but the roads suck where I live and even on the softest setting u feel every little bump. No tracks anywhere near where I live so I just don't need a coil over set up

OK, the car definitely doesn't have the lower one's, I'll have to check for the uppers later this evening when I'm under it. I wonder if I can get them from a dealer?

If you can't get them from a dealer it shouldn't be too hard to find them in a local junk yard. There have been plenty of these cars wrecked over the years.

Only one wrecker in town, never get newer mustangs. Dealer has the top, have to wait 10 days for the bottom

No need to go dumpster diving. Get the Eibach CS5001 coil sleeve, that's what I used because I didn't want to disassemble the stock strut assembly just to reuse the old isolators.

OP was asking about the rear mounts.

You should be able to, I got my replacements for my 06 from the dealer

If you have the part number you might check online and get it quicker.

Ordered them from the dealer but turns out I won't need them. Adjusted the coilovers a bit, added some lca"s and adj panhard bar and the harsness is gone. Coilovers feel like they should now, stiff but doesn't rattle everything over the smallest little bumps now

Whoops, brainfarted.

No problem, it happens to us all sometimes.