Yes, since Good Will is from God and is a function of grace. All men of Good Will will come to know the truth and will be saved. "Glory to God in the highest, and on earth, peace to men of good will." (St. Luke 2)
A different matter entirely is the salvific quality of being invincibly ignorant. Some apparently still labor under the misapprehension that ignorance = grace, and that ignorance of the divine religion excuses immoral personal behavior, thinking apparently the dumber and less knowledgable you are of the Lord, the closer you become to Him. "This is eternal life, to know thee, Father, and Jesus Christ whom thou hast sent." (St. John 17.3).
What??? Good will equals good works which have NOTHING to do with receiving salvation. This is where the lie permeates Catholism I have found...Tell me, how many "Good" works must I do to receive salvation?
You quote John 17:3 after this and still are ignorant about God's plan of salvation?
"Unless a man is born again...." Good works are not a requirement of being BA.