I did a manual conversion on a GX 210 about 6 months ago, this is what you need:

+ Manual pedal box assembly
+ Gearbox, Clutch, flywheel & approproate bolts
+ Clutch cable, and the firewall guide plate
+ New spigot bush for end of your crank shaft
+ Manual Drive shaft
+ Gearbox X-member mount (auto one don't fit)
+ Gearbox lever assembly, rubber boot & knob etc

Remember to bridge out your auto inhibitor wires to get your starter/ignition system to work!