[jhein]

He's got a new video out that I haven't had a chance to watch entirely yet, just watched a bit of the beginning. What he was saying is that even though they flow 300+, that his design still allows for good velocity at lower flow rates. At least that's what I understood (?). But, I'm not an expert on that and I didn't watch the whole video.

[Baron Von Zeppelin]

Everybody can probably agree that Don-DCI is a smart guy.
And the heads will be great performing heads.

Seems like to me they are going to be more of an upper scale niche/boutique item.
So that must be the target he is banking on.
He probably has enough client base in the 550-600+ hp resto-mod category to cover doing the project.

Roundport 72cc Eddy's dropping to $2200 pair with free shipping is going to strike a blow though.
Black Friday coming up soon too.
Guys not trying to make 550-650hp will more than likely take the savings over the casting numbers and the extra cfm.

That's just my old school opinion.
I don't think the new school and resto-mods even care about block codes and head numbers.
And these probably won't ever get approval by any restricted class racing sanctions.

Wish Don the best with them all the way.
Out of my league