My frame is a 69, the motor is a 76 400, I can't find any frame mounts that fit the 76 motor mounts, the frame mounts that are listed for a 76 are the same as Chevy BB and are close to what I need but just won't work. Am I missing something here or what is the problem. Thanks Jeff

Jeff,

The 1976 block is not drilled for the 1969 Firebird motor mounts. You need some adapters to make it fit.

From the Ames catalog:

FN619B Engine mount adaptor kit to fit a 1976-81
engine in a 1967-75 chassis (AP) .. 39.00/kit