I've used both, Dynomax Bullets, the Race Bullets and the Mini Bullets. I like the Minis, a lot lighter and not that much louder.

I have a new pair of the minis in 3.5" inlet outlet I'm not going to use.

2001 Dodge Dakota
408 All Motor
11.27 @ 117.83 mph
2017 NM Mopar Challenge Series Champion.