[HardcoreZ28]

Just go buy them. I wouldn't trust a junkyard piece. The gears are only plastic and get brittle over time. I bought new ones when I swapped gears in my car and I believe it cost about $40 for both...maybe less. The swap is simple. You remove the side cover from the tranny where the speedo cable goes in and you also remove the tailshaft. Jack the rear of the tranny up a little and you won't lose much fluid. It's not a messy job at all really. Should take an hour.