I had a Westwood some years ago. Looking at the photo's I would guess also a Gazelle. B&S 11hp but no deck. I got it for the grandsons to ride when they visited. It was pretty rough but ran well. Eventually I decided to do it up a bit. Alas I found that both drive side bearings were gone. Literally! It had been run that long, previously to me obtaining it, that the drive shafts had worn the casings that much as to be beyond repair. So it went for scrap except for the engine. Recently sold.
So keep a check on those bearings.