Great thread,great work.

Epoxy Mastic121 is great to use,and highly recommended by Classic Car rebuilders.
Also Dinitrol Cavity wax I can recommend for inside doors/quarters/box sections etc.
And Dinitrol Rust converter.

http://www.rust.co.uk/epoxy-mastic.cfm

If you can be arsed take a look at my 309 resto,link in my sig,all three above mentioned products used.