FYI: there were only 2 engines available for the 69 R/T and the 500: the 440 Magnum 4bbl and the 426 Hemi 8bbl. Just a slight price difference between the two.
You could not get an R/T-SE with anything but the 440 Magnum in 1969. (That prohibition changed in 70 though)
There weren't any non-big block engines in the R/T. Other engines for the base model and the SE were the 225 6 cyl (very rare), the 318 and the 383 2 and 4bbl.