Hi Nige, Blasting and priming is the way to go for a really good finish mate, it gets rid of all the old paint, rust etc. You Briggs was made on the 10th September 1984 so it is 30 years old.
Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member. Kindest Regards, Darryl