I'm curious about the TH springs. I ordered the Eibach pro kit which I had on my SRT and they looked great - do you have any idea what the difference will be with a TH version?
Bare minimum will be the spring rate... The TrackHawk has a higher spring rate from the factory to help handle the additional 200lb vehicle weight as well as to reduce flex during take off.
SRT OEM rate: 94 N/mm (537 lbs/in)
SRT PRO-KIT progressive rate: 103 - 153 N/mm (588 - 874 lbs/in)
Trackhawk OEM rate: 102 N/mm (585 lbs/in)
SRT OEM rate: 157 N/mm (897 lbs/in)
SRT PRO-KIT progressive rate: 70 - 172 N/mm (400 - 982 lbs/in)
Trackhawk OEM rate: 181 N/mm (1031 lbs/in)
Rumor has it that Eibach will still use the same front springs for the TH from the SRT ProKit... Looking at above you can see why that works as the Eibach START at about the same rate as the factory TH rate. But being a progressive spring, they will get stronger as they push down.
But on the rear, you can see the SRT Eibach springs max out at a lower rate than the TH standard. Meaning your ride quality may actually improve but you will have more squat at launch. Potentially too much.
SO again, rumor is, they will use the SRT fronts but do different springs for the rear, with a higher spring rate.
It has also been said that they may drop it more in the rear as well but personally I think they will be limited there as they typically opt to keep the drop in a range that still allows wheel alignment with factory adjustments.
But just in case it comes to fruition...
Front: 0.7 in
Rear: 1.3 in
Potential TrackHawk Drop:
Front: 0.7 in
Rear: 1.4 ~ 1.6 in