Alan,
I think Pari was referring to the Seine Gate Shift kit:
http://www.seinesystems.com/GateShift-1.htm
Install:
http://www.seinesystems.com/GateShift-Install.htm
How to 'Blueprint' the 915 shift mechanism:
http://www.seinesystems.com/ShiftHousBluPrint.htm
I'd also replace the 'ball cup bushing' under the shifter and the 'shift rod bushing' in the tunnel under the housing. Chris and Ted also have the Seine kit with a short shifter and combined (with new bushings) totally transforms the feel.