I dropped the tranny at work on Friday and split open and found what you said
one of the internal linkage pins broke, causing me to get stuck in third gear.

I thought I had fourth but I was wrong the lever would go to fourth bun not engage.

I had to drive to work in third gear, and caught every light on the way, the clutch held up good to my amazement, it's still good. Now I slaped a b16 tranny that I got for 400 bucks.

I wish I had a digital camera I would post pictures, I'll try to get a hold of my friend.