67/68/69 cuda dilemma

Rust on cowl skin is all gone. Clean steel with some pitting spots. Wiped it down with TSP and water mixture, scrubbed the last of the naval jelly off, and neutralized it. Then scuffed it all down with 80 grit on a DA sander. Have to do a bit of bodywork to it. Weld fill a few holes from what was a cowl mounted gage panel. Clean off the paint from the rest of the cowl inlet fins. Then it will be time to primer it. I figured i would clean up and primer the windshield opening all the way around while i was at it as well. Need to fix a few issues where the lead fill is in the lower corners of the windshield opening as well.

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What do you neutralize the jelly with? Does the jelly seem to affect the lead filler any?