I have 108,000 and the original clutch. Shoud last another 92,000....they are basically bullet proof. I didn't go with the cold air intake too many others say no real gain from them. California emmisions are the strictest for sure (I'm in California too) but if it aint broken don't fix it. When you bought it, it had to pass smog or you couldn't register it so if it passed....no worries. Also never heard of an oil cap stuck so bad...maybe the wrong one...or they never changed the oil and it fused to the filler....who knows...spend $10 and get a new one. It seems your a little nervous of the new Jeep.....relax they run and run and then they run some more. Just drive it it sounds fine and remember you'll never see a TJ waiting to run the 1/4 mile....then again you'll never see a funny car 4 wheelin. Take the top off maybe the doors too and have fun, that's most improtant thing. Oh yeah Welcome and post some pictures of it....everyone here loves pictures.