It is a nice lump of a loco though - here's some pics (and measurements).
Apologies for the photos (my usual standard but against some sunshine).
I don't posess a Spectrum Porter, but the Rodgers' certainly makes the original Bachmann one look pretty small (which they often were in real life).
It doesn't look out of place against a Big Hauler.
Width (over cab roof);- 121mm
Height to top of cab roof;- 155mm
Overall height (Chimney, etc);- 172mm
Length (tip of Cow-catcher to rear edge of roof):- 354mm