With my stock bumper I can barely fit under the car to get my oil plug off. So how do you change the oil with a kit on? I mean, you can't get a jack under there either, can you?

ya you can

you just have to be careful

or take off a skirt

i do it from the side behind one of the front wheels

Well heres how I used to do it, and this is how most guys that I know do it with a kit on. I would drive up on to some wood block so that I could get my car high enough to jack it up with out messing it up. Or you can make some ramps to drive it up on. either way works good. Its that you have to take your time when doing it thats all.
Bryan

Spend a lil weekend time and make some custom ramps that are long and not too steep.

i don't have a body kit but i just jack up the car on one side towards the front, as if i was changing a tire, then i slide under.

Hmmm, custom ramps...good call.

mine went onto regular ramps just fine...dont get me started on how ****ing hard it was to get the oil filter off..had to take off the heat shield and man it wasnt easy but it was the first time *shrug*

**** the ramps, just take a couple pieces of 2x4, about 3 or 4 feet long, drive up on them and then jack the car up. Don't waist your time trying to build ramps, its a waste of time.