Caprice 9C1(police Pkg.) and Impala SS from the '90's will also work well, especially on A/G body GM cars. The rag joint and fittings will need to be updated to work, as with any 1981-up box.
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1976 LeMans B09 Freeway Enforcer, 455/M40 Smokey
1977 Trans Am, 400/M21 Black/Gold Bandit. 44K actual miles
2017 Sierra SLT 1500 Z71 4X4 
2019 Canyon SLT Crew 4X4 
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