First time posting.

Anywhere for that matter.

Please forgive any etiquette mishaps.

I'm new to the game.

Starting a build on my 07.5 Cummins. Compounds.

Mostly for 3000 lb towing but a little bit of play.

Looking at appx 800 hp.

Questions:

1. Is there a downside to fire rings? Any good reason NOT to have them cut in my new heads with an 800 hp compound setup.

2. I'm looking at D&J and Fleece. Any opinions on either? Any suggestions on other vendors would be appreciated as well.