if you end up messing up an internal thing, you get to buy a new tranny! $$$ however i know there is a big stash of them at secret services and you can probably get one for pretty cheap. and all those probably work great.

a tip for driving, when shifting into third you basically push up on the shifter lightly, the neutral point of the shifter resides between 3rd and 4th gear so when shifting from 2nd to 3rd, just push up lightly and it should just pop up and over as one push, the only time you would go 2nd to 5th is if you had to pull to the right on the shifter, as to get it to 5th or Reverse requires some force. the only time i shift from 2nd to 5th is if you are ragging the shit out of the car and do some hard 1 and 2 gear pulls and by the time 2nd gear tops out your at 55-60mph and you can just go to 5th instead of going through the rest, and yes it will grind sometimes, i find giving it a second or a rev helps it not grind. a b&m shifter/short shifter package will help that too i dont grind anymore. (2nd to 5th is not a recommended daily procedure)