Vibration

I have a 2004 jeep wrangler rubicon, it has about 34000 miles on its inline six, with a 5 speed manual tranny. Its pretty much all stock, except for its suspension. I have a 5.5 inch rubicon express long arm suspension, with 35 inch tires, and a cv yoke and drive shaft.

about a year after the lift install, I got an alignment done. Shortly after I noticed there were clicking noises that I could hear coming from somewhere in the engine compartment (i think), and I could aslo feel the clicking in the steering column. This happened usually while turning. Shortly after it stopped and I forgot about it. But for about a year it would pop up every once in a while but then go away shortly after. Not enough for me to feel concerned.

but just today (not sure if its related) it has been having a major vibration that comes from the steering column. I can feel it in the dash and a little on the floor too, but it is most noticable from the steerign wheel. At first it seemed like a bad piece of road, but then it kept it up. I tested it in different situations, the vibration is non existent when I am stopped. When I rev the engine in neutral I dont feel a vibration. When I coast, I do not feel a vibratoin. When I accelerate I feel it and it gets worse the harder and higher I accelerate. When I accelerate up hill it gets even worse.

i was told that it might be a dead cylinder, but I have a feeling its not the engine because there is no sign of vibration when I am in neutral reving the engine. I suspect its somewhere else in the drive train. I havent felt any loosness in either of the drive shafts, although I have not thoroughly inspected the ujoints or much else. Thats all the information that I can think to send right now, any help is surely appreciated.

thank you very much!