I owned an '86 Catalina 27 (until it was totaled in a hurricane). Had a nice Universal diesel. This was a great sailing boat and I would prefer this model over the Cat 30 (unless you really need the cruising space of the 30 ft model). I had heard that some Cat 27s in this vintage had motor mount cracking problems, but mine did not. Also note that it is very difficult to reach/adjust/service the OEM packing gland so make sure you check that out on the boat of your choice. If mine had survived, I would have installed a PSS gland. Finally, on the 27 access to the starboard side of the engine is thru a tiny port, not great so, if you buy one, consider having a larger access port cut into the panel running along the quarter berth on that side. A very easy DIY fix that is well worth it.