I decided not to lock the input shaft on my GS450h project and am willing to sell the flywheel / damper / spline that I bought. Will not be using it. I liked the idea of having the damper because it would have buffered some vibrations when on/off throttle.
DM me with an offer. This thing is pretty heavy, so shipping will be actual cost.
Pic shows full assembly on the transmission as I was test fitting. This listing is for the flywheel / damper / spline only.