Johnny Nash-"I Can See Clearly Now"

My mono/stereo promotional 45 confirmed as Epic 5-10902 has a listed time of (2:48) on both sides and both sides have an actual time of (2:45). I'm not really good at telling whether or not something is a dedicated mono mix or not, but to my ears during the A/B of both versions, the vocals were louder in the mono mix than they were in the stereo mix folded to mono, except for the point from about 1:16 to 1:31 when they seemed to be a bit louder from the mono fold down of the stereo mix. The mono mix ran very slightly faster and had a very minimal extra bit at the end of the fade out, which I had to boost the volume greatly to even notice over the record noise.