Internal balanced

Duster2022! said

I did read that, but if I’m gonna stick with the original 78 440 crankshaft that is externally balanced I guess I should probably just keep with the original rods that are with the crank and just change out the studs and bolts with a heavier and strong stronger
But if I then decided to go ahead with the forged steel crank, I have read that I want the LY rods for that set up

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Unless you plan to put a big cam it that short block and spin it 6500 rpms all day you'll have no need for the studs or rod bolts.

The rod beams will break long before you'll ever have any issues with the bolts. If you really want to spend some money buy yourself a new crankshaft damper.

In my opinion you want LY rods in any engine over the big heavy 440 6- pack style rods. The LY rods will allow the engine to accelerate a lot faster (rpms per second).

Tom