The motor is the same as the Spree with the addition of a variable front pulley. While there are no off the shelf commercial parts available quite a lot can be done to them. Check my Spree test bed for mods thread for what I have done. There is also a Pal thread of things I have done to my Pal.
keithw
Honda Pal (Speed-o-scooter) JDM Spree with varator trans.
Honda Spree, 1985.
Another Honda Pal
Welcome to the Honda Pal Club. I hear there's not too many of us. If you don't mind, can you post a picture of it? I am still learning about these rare beauties.