David Liscio wrote an article in Sailing Mag in the Nov. 23, 2015 issue regarding a Bristol 32 retrofit. He might be someone to contact. Here’s a link to the article: http://sailingmagazine.net/article-1705-retrofitting-a-bristol-32-sailboat.html.
There is also an excellent owner’s group with lots of information on the Bristol 32. Another good place to reach out to: https://sites.google.com/site/bristolowners/