Let's see paint color - no help.
Time of day - same as paint color.
Twin engine - could be one of several thousand....
No turrets - kinda limits what it Isn't, but not much for what it be!
Flying low and slow - almost all of them will do that!
Now that I have all the azzhole out of me
Do you think that it WAS old military, jet or recip, radial or something else, tail configuration, high wing or low........
Pictures would be better...........
Sorry Ken, just need a little more!