1974 Dodge Dart Sport rebuild

Gotta say, that turned out well! I've used it it motorcycle tanks before but you have to make sure you neutralize it well as you said. How many gallons in the bucket?
I can look when I get back home but I would guess those blue buckets have about 10 gallons of water in them. The one to neutralize has about 14 lbs of baking soda mixed into that 10 gal of water. I can give the exact amounts tomorrow. I finished the last piece I need to acid clean so I then dump the acid into the neutralization bucket (very slowly as it foams a lot). I then let it sit overnight before checking the PH with a pool test strip. Once it balanced, I can dump it out back.