Hi Douglas..Unlikely I would say..When I restored my 5SW nothing looked the same. Cams and follower arrangements were completely different..and you wouldn't want to fit inferior quality Triumph parts to a BSA.
...Ian
email (option): ian@wright52.plus.com
shame on you Ian 
Guy
Hi Guy..Triumphs can't be that bad...or I wouldn't have spent all that money on this 5SW.. . It will probably be in Normandy in 2014 with its new owner..Ian 
email (option): ian@wright52.plus.com
Now Ian the 3s was offered in my area, but to expensive for my this moment.
Normally Marnic will have a rolling 3hw frame in no time, I just need to make some new bushes for the front fork and then we need to check the engine over.
For sure he will make it to Normandy in 2014, and on a proper bike!
May bedford QL project is also moving on, the welding work is don on the cabin butt there is still a lot of work to be done for 2014 
Guy