Virtually all the problems with old British bikes was due to poor assembly with old gasket materials, sealants and primitive electronics. All of these can be fixed with modern equivalents if you have the time, money and inclination. They're generally very easy to work on as well and if done properly can be very reliable and economical. All parts are available, especially for Triumphs, some pricey and some much less than our Japanese bikes. Whether you'll like the end result is a matter of opinion. Bought at the right price and made good, classic bikes are a much better investment than any savings account. Many will say that the best Triumph twins were those built during the late '60s especially the Bonnevilles around '69-'71 along with the Trophy (very similar but with a single carb). Whether the ones you've been offered are good value only a good viewing by an experienced classic owner would determine. If they're original and not been messed about with, which is all too common, they could well be a good buy.
