NEED HELP,FUEL PUMP BOLT ISSUE,LEAKS OIL

Drilling the hole and tapping it does not necessarily require power tools.

My bet is you could chuck the propper sized drill bit into the tap holder and drill the new hole by hand slowly.

The chips will be relatively large so a rag or gauze rag in the pump opening and a finger behind it should prevent 99% of all chips ending up in the engine.