sorry dude , 140 mile away
wire brush on the end of a drill , an hours work
for treatment i use stuff called por15 , its not really a paint as such , its a treatment for petrol tanks so you can imagine its rather tuff stuff , it really is a paint and ignore forever more application ( you paint it on ) , its also expensive and you can only get it from a couple of places , ebay and some company called fosters ( if i remember correctly ) , good stuff