while autocrossing a couple of weeks ago i went to down shift from 2nd to 1st and i went straight to reverse!!!! luckily i didn't let the clutch out because i realized it!!
oh, and i "down" shifted from 2nd to 3rd.. needless to say i didn't win that race haha.
I've done it twice, but thankfully I wasn't at the top of 4th when I did it and the car was fine both times. I have a whole new head now, and I'm a little more careful about shifting, especially into 5th.
ya ive been wanting to change my belt soon the cars got 115k on it and motor has 50ish. iam coming from the honda scene, had a gsr. working on those were a piece of cake with all the room you had, i didnt have ac or ps that helped!! i look into the svt's bay and iam thinking how the hell iam i gonna get in there!
I also have a shop manual which helps a lot; you can usually find one on Ebay. It's the best resource to have at your disposal so you don't have to spend time searching through threads, or posting questions hoping and waiting people will explain it to you. 
I've done something like this before lol. Accidently, of course. I was on an abandonded street about 3 miles away from my house just driving and shifting at redline. Well I ened up shifting from 3rd gear to 2nd gear missing 4th @ 70mph. And yes, I did let the clutch out :/