Check the engine code stamped into a ledge by the distributor. An example would be F1010UT. This source says a 292 65' engine should end in a UT or UH suffix. http://no25.chuckthetruck.com/page3.html
Sorry, no 292 info listed for a 75' engine in the above source.
Hope this helps.


"Nothing astonishes men so much as common sense and plain dealing." - Ralph Waldo Emerson