<<< It is fashionable, particularly in the trade press, to poo-poo boats and systems which are not "current". We often panic that our boat's systems are not up to "standard". Standards have their place but it is important to recognize that many of our boats have served well for the last 30 years and continue to do so for a few more years more without changes/upgrades. >>>
There are a few things that have changed over the last 30 years or so too. Standards are important, of course, but moreover is common sense. I've spent a few good years restoring my Contessa 26. She still lacks : radar, house wiring, chartplotter, fridge, new cushions, speedo/depth, a second battery, etc etc and a few other minor inconveniences not worth mentioning. For th4 e first 1.5 seasons, I hand cranked the engine...........
She has : new standing rigging all sta-loks; wilcox crittenden imperial 51 head rebuilt (me) and newly installed; 1990 yanmar 1gm10 rebuilt (me again); deck (rotten, really rotten) recored with all cleats, pulpit bases, fwd stanchion bases all in solid glass; ports; cockpit floor panels modded; new bulkdheads and proper compression posts, masthead casting reinforced, stemhead tang remade in stainless, ALL old green crusty seized gate valves replaced w/ bronze ball valves and thru hulls rebedded........ etc etc.
By today's "standards" she's draconian. Not "current" - obsolete and uncomfortable. But she's 1) Safe, 2) Dry, 3) Comfortable (by me, wife, dog. so far....) . Gate valves are a perfect example of somethings that have lasted for 30 years, but really shouldn't be around anymore. Just because "its lasted this long" doesn't mean it was right in the first place, and there are a few key areas that I would address before taking any boat (new or old) anywhere.