GearMaster makes a "Gear Availability and Synchronization Indicator".
www.gearmaster.com
This ($1500.00) device inputs your speed and engine rpm, and gives you indication when to shift. It appears that it can help you float shift both up and down the gears. Anyone out there have any experience with this product? Opinions?
....If this device works as advertised, ANYONE could shift a 10 speed Volvo 610, or any manual transmission on any truck. This would open up the availability (for us trucker challanged old guys) of 5th wheel hauling Volvo 610's, with manual transmissions, in the $20K to $30K range. There are a lot of nice ones out there.
See the world from the front seat of a Volvo 610.