how many spacers should go on -top -inner,outer.bottom -inner,outer to set the caster right and toe in should be ?

Try to get hold of a Manual.There is a formula you get from it.You need to measure the offset between the top and bottom trailing arm measured at the face where the shims will sit against then consult the Manual-will tell you exactly how many and where they need to go.

Every car is different you need to measure the offset.