Thank you all for the suggestions. All are appreciated. Please remember goal here is gain some performance while providing you with economically sensible crate engines. It's not to design a 9000 RPM, 900 HP, SB with 13:1 compression that would cost 16K, and we'd sell 5 a year of. If someone wants 800+ HP...we sell Gen III's. Gotta Draw the line somewhere. Some may call it weak, I call it practical. I will note the set here flowing 290 are ported. We'll probably use an as cast version on the current alum head 408, and maybe do a ported set on a bigger one. time will tell. I'm really excited about it. Glad to see the interest!