Which dual quad set up?

Did I read this right. A 512 big block with ported heads and a dual quad setup and then trying to get all that to go through a 1 5/8 tri-y header. Good luck. TTI 2 inch is only is only about $150.00 more. I tried the route you are thinking about and ended up selling the tri-y's. No sense trying to get all that air and gas in if you can't get it out.
Kenny b