so i have a 4" TF lift with front lowers / rear upper arms. my question is that i want to come down a bit on the height, could i just install some 3" or even 2.5" springs and then adjust my control arms and track bar? im just trying to make sure i am thinking this through right, please let me know if im missing something.

 

I think you'd have problems with your extended bumpstops, brake lines and on the 4" kit there were additional brackets specifically for TF lifts 4-6".

I'd be interested to know the answer also. I've thought about switching to 3" coils.

 

If you have teraflex shocks, they will work with the 3" but will be too long for the 2.5". The brake lines should be ok but be sure to loosely zip tie them to the shocks so they don't get caught up in the tires or other moving parts. Pretty sure the rear track bar bracket will work if you move the track bar to one of the bottom holes. The rear upper bump stops should come out, bottoms are the same. Front lower bump stops come out and tops remain.