as title i have 5 bottom ends that need rebuilding, 3 were knocking, 1 holed a piston & 1 snapped a rod, how difficult is it to rebuild them, will cranks need a grind/polish, will i need to replace piston rings & get the blocks honed, really want to have a go at this so any pointers will be welcomed.

where to buy a decent reasonable priced torque wrench & will i need any other specialised tools

or am i better off selling them thanks steve