Someone in another thread recently said they couldn't find the right driver for installing front wheel seals, so here's the random find I've been using for Gen II seals, a HyperTough 64P-14 oil filter socket, with the outside very slightly filed for a looser fit in the knuckle.

 

That inner seal is the one that gave me the most issues. Seemed like the smaller the diameter of the seal, the easier to install. Probably less resistance because of the smaller surface area contacting the bore.

On Gen II, inner and outer are the same seal. 

On the 3rd gens the outer seal is smaller, it fits around the inner boss of the hub. The inner seal is larger. It snugs up against the outer CV joint. The outer cup of the CV is the sealing surface so the seal is quite large.