Camaro didn't use the T-5 until 1983. I have a 5 speed out of a 1978 Monza that was a V-6. It is a top loader style kinda siilar to the T-5's but shifter is different. Don't know much about these ones.
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Ontario Inliners
1940 Chev Sedan
1954 Chev Custom
1965 Chev Pick-up