I don't remember a 375 hp 350 for our trucks. I think what happens in alot of cases is a previous owner will unknowingly give you inacurate info based on what they were told by other previous owners. For instance, When I bought my truck the owner said yep its a 6 bolt heavy half and the glovebox option said it had the heavy duty suspension so we assumed it WAS a heavy half and I didn't know that this was completely wrong as GM did not make a heavy half from 67-72. Doug
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