Paul is writing about one heart. Both the Gentile, not under the law, and the Jew, under the law, are dead in their sins. Neither can be justified because sin has killed them and the law cannot save them.There are two 'hearts' that Paul is writing about in Ro 2.
The 'hard and impenitent' heart...:
5 but after thy hardness and impenitent heart treasurest up for thyself wrath in the day of wrath and revelation of the righteous judgment of God;
6 who will render to every man according to his works:
...and the circumcised heart with the law written upon it:
13 for not the hearers of the law are just before God, but the doers of the law shall be justified:
14 (for when Gentiles that have not the law do by nature the things of the law, these, not having the law, are the law unto themselves;
15 in that they show the work of the law written in their hearts, their conscience bearing witness therewith, and their thoughts one with another accusing or else excusing them);
29 but he is a Jew who is one inwardly; and circumcision is that of the heart, in the spirit not in the letter; whose praise is not of men, but of God.
God renders to each of these hearts according to (not because of) their works.
7 to them that by patience in well-doing seek for glory and honor and incorruption, eternal life:
8 but unto them that are factious, and obey not the truth, but obey unrighteousness, shall be wrath and indignation,
9 tribulation and anguish, upon every soul of man that worketh evil, of the Jew first, and also of the Greek;
The heart of man is desperately wicked. It never seeks after God, indeed it cannot.
redneck, you are stumbling over your inability to understand Paul's legal argument, which he builds from chapter 1-8. I urge you to fully study this entire argument rather than cherry pick and thus miss the entire argument.