Need a little help understanding. I have a casale box with whirl-away and I want to shift between neutral and drive, then from drive to neutral and vise-versa, all at idle or off idle. Prior owner said that shifting while running almost broke his arm, so that sounds non-so-fun. The shifter is...

Installing a B/W velvet drive in my 63 Biesemeyer. Already have a foot throttle so now I need a way to shift it in and out of gear. I'm sure someone here has done it. What you use?