Need to find source for these parts (bolts and lower intake)

I want to buy 4. I have 5; one for the heater tube, two up front to support accessory drives, and two in the rear that I’m using to support wiring and vacuum tubes routed in the rear. I broke the one in the rear, and the other one is eaten-up by the cooling system. The two up Front didn’t cleanup well, so I want to replace those 4 corners.

On a different note, I was just cleaning up the lower intake so I can prime and paint it, and I discovered that the right rear corner water outlet that had a plug in. It has eaten through the side of the intake and there is a hole there now. So I’m also in the market for a lower intake if anyone happens to have one. I’ve updated the thread title to add the lower intake need. Thanks again.

Thank you, exactly what I couldn’t find. Anyone have a lower intake in your way

I got luck and found someone local who had two to choose from. Thanks again for the help.

Yea, these studs have the same thread top and bottom. I think I’ll try and find just studs. Thanks.

I think I’ll go with these:

Well, those O’Riley parts didn’t work. So, I acquired this stainless steel all thread and made my parts from that. I’m sure it will last longer than the plain carbon steel bolts that were there for almost 40 years.