a manual gearbox will cost from rm800-rm1800 depending from who you buy it from. then you have to decide wether to change to a new clutch plate and flywheel b4 putting the box into your car, that will cost another 300-500 bux. if long shaft not included with the gearbox, add another 500 bux. you may need another 50 to 100 bux to get the pedals and cylinders. workmanship around 800bux. how long it takes? i duuno have not done the conversion yet.
well this is for the normal gearbox only......diffrent story if you want to go for the "overrated" dogleg gearbox.
lsd is used on the diffrential only (sometimes also called the rear axle), you may be able to use your original diff. if you want to change to lsd figure another rm800 to rm1600 depending on who you buy it from.