Manifold cleanup

I got this XR3 manifold a few months ago

After two weeks in vinegar and about 10 mins of wire hand brushing 

not to bad - its coated in oil for now - as i need to find a XR3 downpipe (double) and adjust it to fit the single SS1 down pipe. 

Edit: i need to use the existing SS1 downpipe which is a double flange with single downpipe