A few questions about fuel and internal parts

[Khaj]

Looking at buying some new injectors and injector pump rebuild or replacement is there any modern replacements I could use for my ld28 trying to chase a fuel issue and think that my injectors might be failing it’s been having idling and no power issues internals sound good and don’t have any blow by

I was also thinking of replacing my cam for a performance cam and was trying to find a headgasket, rods, pistons, and possibly a stronger head since I know the valve seats crack on these when boost is applied I have a turbo and kit for the engine and wanting to basically refresh the engine

I saw that the 5.9 Cummins had a ve6 pump and looks similar to the LD pump and was wondering if I could make that work

[Khaj]

Any useful information would be greatly appreciated and if you have links or part numbers to direct me somewhere that’d be great bosh service centers aren’t a thing here yet in OK unfortunately