DC/Mark series headshell compatibility?

[Whoopysnorp]

I've been watching eBay for a Mark series headshell, into which I'd like to load my Mark III. A listing popped up for what claims to be a Mark series headshell, but it looks like a DC headshell to me. Did those have the same dimensions and screw locations as the Mark shells? My III doesn't have reverb so I wouldn't need that, but I suppose the fan might be a concern.

 

[Whoopysnorp]

That's a good idea; I'll check it out. I assume, then, that DC-5 heads are longer than Mark short heads?