I don't know whether this is the right place for my post or not.
One of my client is having some legal sites. All the sites are having keyword rich domain names related to different niche of Legal Industry.
All the sites are having decent rankings and link juice pointing to them.
Now he is very much possessive about one particular site out of those. He wants to put max of the effort to rank it top. In the process he wants to use the other legal sites he has.
Although the sites have different c class IP, still I am not very much sure to go for interlinking.
My questions is in the above mentioned situation, how can I use the other sites for the better result of that particular one site.