To give you an idea about the shock extensions. My stock 2door had 97mm down travel remaining on the front and 88mm remaining on the rear til the shocks reached full extension. If you stick 2.5in coils in, with no steel bars you will get closer to 3in (or 75mm).
With the stock shocks this is going to leave you with only 1/2 inch or so down travel remaining on the front and just under an inch on the rear. the slightest bump in the road, or even spirited cornering will see your shocks reach full length!
So you either need longer shocks, or extensions to make your shocks longer. OK, so we stick the 2in extension on your stock shocks and now you have that extra down travel you need to ride properly. However, the compressed length of your shocks is now 2 inches longer than it was. If you disconnect the sway bar to get some good flex over bumps you will push your diff up til it hits the bump stops. Stock setup will have the shocks with 2in travel left at soft bump, push it harder and compress the bump stops and you will have less than an inch shock travel left. NOTE: you DO NOT want to have your shocks bottom out, they will not last very long!
So now you need to fit bump stop extensions so that the axle hits the bump stops before the shock bottoms out, so you will need at least 2in bump stop extensions!
Got that all sorted, now you diffs will be 1/2 in off to one side as the track bar is now too short at this new height as its angle has increased. So for the front you will want an adjustable trackbar (as 2.5 to 3 in to not high enough to fit a high steer kit), for the rear I would suggest a track bar bracket to either drop the top end lower or lift the bottom end higher (not going into the pros and cons of chassis mount vs axle mount at this point) to flatten out the track bar closer to stock to reduce the bump steer in the rear. Bump steer in this case is when you hit a bump, the springs compress and the track bar flattens out pushing the diff sideways back toward the middle again, making the back end of the vehicle wiggle over bumps. Flattening out the track bar reduces this.
Hope all that makes sense!
Cheers from Downunder, Dave.
2010 Dark Charcoal Pearl 'Renegade' pack (includes dual top options, 17in alloys, side steps etc).
2.5in Flexy springs, Bilstien 5100's, Teraflex rear trackbar bracket, Synergy front and rear sway bar links and front disco kit, Synergy steering damper relocation bracket, AEV front drop brackets, ARB front and rear bar, 10,000lb rope winch, Britax Xray Vision driving lights, GME 3440 UHF radio.