The Jelco basic lift mechanism will work, but the arm needs a fixture fabricated for it. Here's an example of a project from awhile back.
Several guys online wanted one, so I designed it, and a friend machined several of them from aluminum plate. Then, they were anodized, and I fitted the pieces. The tonearm for this project was an AT-1005 II, but it would apply to your tonearm, as well.
Also, we are sometimes lucky enough to adapt parts from broken tonearms to others where they are actually useful. Here's an example. It is a Syntec/Sedco/Piezo. It sold under all those names, but is really the original AT-1005. Anyway, the lift is one adapted from a trashed MAS 282.
Think outside the box because that's where the answer lies.