I am just bought a 1968 firebird and should there be only four subframe bolts or six thanks

There are 2 that are at the rear of the frame, 2 that are almost lined up with the rear of the fenders and 2 at the front that mount the radiator support.

I am just about to pull my subframe to clean it up and replace the bushings. There are six total bushings, Two at the rear of the subframe, two about the middle, and two up front by the core support or radiator support.

Brian