Looking at the "what have you done to your Jeep today" thread got me thinking... we all spend way too much money customizing our Jeeps to our own needs, often by trial and error. Since hindsight is usually 20/20, how about posting some personal comments on mods that you've done and enjoyed or regretted?
To start the thread off...
Mods that have worked well for me...
-IPF and Hella headlight housing upgrades. Makes it a LOT easier to see at night
-Rear locker. Overall positive on this, a great traction boost especially for punching through the unplowed sections of the road when only the left or ride side of the Jeep is on a plowed surface. The torque-steer isn't too bad and you get used to it quickly
-Rock rails. Saved a lot of body damage and makes it a little easier to get in and out of the Jeep when it's muddy (or stuck in the mud). Just wish I'd gotten them sooner!
Didn't work out like I hoped...
-Silverstar sealed beam headlights. Better (a little) than the stock Wagner headlights, but not worth the money when Hella housings weren't much more expensive and reusable!
-7" lift kit. Just way too tall for a small vehicle like a Jeep. Very tippy when the trail starts getting off-camber. I'm going to flop it one day.
-Banks exhaust header. This isn't really a "regret" item, but it's not worth the money if you bought it for a power upgrade. I got it because my stock manifold was cracked and it comes with a lifetime warranty, which has already been used once.