Ok, so I replaced the clutch line. Didn't fix my problem.
Now, I have thought of some important info, possibly.
I took the car to the track. Only mods were CAI, Tune, LCA, and LCA relocation brackets. Oh, and the blowfish racing bracket. On Drag Radials.
Car shifted ok. Not great, but ok. was a little tough to get into third, but it went in.
Now, flash to the next time to the track. Only thing done to the car, aluminum one piece drive shaft. Now the car wont go into 3rd anything above 6k rpm.
Now, the pinion angle was already fucked because the car is lowered 1". Now it is worse. I do have an adjustable upper, but havent installed it yet. After realizing this piece of info, I measured my pinion angle. It is -1 deg. Everything i have read so far, and talking to my local hot rod shop, a stick car with poly bushings should have -3, so it is 2 degrees off (which has been told to me that is significant).
So, could that be the shifting issue? In some way? Seems awfully funny that was the only thing done to the car, and then the problems shifting to third begun.
It is possible it is a coincidence, but does anyone want to chime in?