Preferred driveline brake for 83?

[dljosephson]

So the saga of restoring the 83 Turbo 310 powertrain and chassis continues. It's worth it but there is a lot of work reversing 20 years of git-er-done fixits. I guess no one thought it would be around that long. Fortunately all the systems, interior and cosmetics are fine.

Today's question is the parking brake, or rather lack of one. This is an 83 with Isuzu 6BD1A, Airstream-added BAE turbo, original TH475 transmission. The PO installed a Gearvendors unit and it works fine. But somewhere the parking brake got removed. There is a cable under the dash for the usual parking brake lever but no lever. Disk brakes all around, so I have to assume there was a driveline brake at some point (but not the automatic hydraulic one).

Any suggestions on a retrofit manual unit that doesn't require a science project to install?