Called Muscle Motors today, and the report from the person that took my call, said that their unit was in "production" and should be ready in 2 weeks or so.
Here is an old post of the GTsaver short throw shifter.This is very easy to install. This has been tested with other drivers and everyone feels that the lower profile shifter ball positioning works very nicely!
ADDITIONAL INFO:
This is a short video of a quick test using my low-profile shifter ball with short-throw shifter. This is almost 40% less throw over the stock setup.