Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

I believe Nick comment that I should have gone for Wilesco D24 rather than the D20 I have coming....am I correct in thinking these are the same engine/boiler with the steam gauge and oiler mounted in a little control house vs the gage is on the boiler and the oiler on cyl in D20....with all other specs the same other than that?