I have been running a Zone 3in for a year and have had no problems with the stock drive shafts in my 2 door auto. And it has seen some tough trails that fully flexed out the suspension. If the boot gets torn then I will worry about replacements.
92 XJ 6 1/2 RC lift plus 2in BB, 35x12.5 Mud Rovers m/ts Aussie front D30 and Powertrax locker C8.25 rear, Rusty HD steering, RC control arm drop brackets, Nates rear bumper, HD SYE, YJ brake lines, Transfer skid plate, Nates slim line front bumper, Smittybilt XRC-8 winch, converted A/C to onboard air, Rino lined Floor boards
06 TJ stock gone
08 JK Rubicon 3in Zone lift, 35x12.5x17KM2s 1.5 wheel spacers, Super Chips programmer