WTB - 1968 4-speed shifter and linkage. And 1969 4-speed shifter and linkage. Note: 1-2 linkage has a clevis joint @ trans linkage; different than 70. 69 Reverse linkage would be nice but not real hopeful for that part. Just the linkage or shifters would be good to find.
There was a complete 68 GS 4-speed project car on Akron/Canton craigslist. Might be a goid parts donor.