>>715372507
Here's the highest quality art I could find for DOJ, BL, and PS2 versions. https://drive.google.com/drive/folders/1Cribj7ZCuKolr60RIuhkBv1neK6VGMy0?usp=sharing

Also, at World of Arcades, you can find some more good quality artwork here:
https://www.world-of-arcades.net/Cave/DdpDaiOuJou/DdpDaiOuJou.htm
https://www.world-of-arcades.net/Cave/DdpDaiOuJouBl/DdpDaiOuJouBl.htm