Do I need a hardened intermediate shaft for a HV oil pump?

I have a melling high volume pump on it right now, and I assume it doesn't have the high pressure spring that was mentioned. Good to hear that I shouldn't have any issue with the bushing, seems like once I get the new hardened intermediate shaft I I'll just drop it in and go.

Besides my old intermediate shaft is showing some wear, best to change it anyways.

And about the oil starvation, it does seem like that could be a problem. But fortunately for me I have an 8 quart moroso pan on there, should have plenty oil to not suck it dry.