Well it sounds like you broke something for sure
What I am not sure. I shattered my 3rd gear once and it made a bang and then the rattle. You may have just chipped some teeth or something. After my 4rth rebuild, (the owner before me blew it 3 times) I decided it wasn't worth spending 500-750 every 6 months for a rebuild so I bougth a new trans. I found a T-5Z on E-bay for 960, including shipping. The tranz is a night and day difference. Syncros spin up instantly and the shifting is so much more solid and it can handle somewhere around 335 ft/lbs or tourqe Vs the stock 275 ft/lbs. You don't need to replace anyhting else and it fits in the stock stetup too. If I were you I would try to find a T-5z, or find a rebuild kit to convert your one. The kit runs somewhere around $500 I think. The T-5z also has a steeper first gear wich I like because I don't rip so much in first. I think it's a 2.92 compared to the stock 3.27 or something.