the draw through on the intake makes sense to me
what baffles me is the the left and right join together at the bottom, That's right and from there all exhasut gases exit the turbo
but I only see about a 1 inch passage from the rear to the center ports That's right
and front one doesn't join;Front and rear join where the right bank joins the left header
and has to blow into back pipe which in the end goes through that 1 inch opening No, it all goes out the center 2 left exhaust tubes and then through the turbo
they should be like a double shorty header and exit bottom and top, bottom should cross to other side and top enters the turbo, what I see will not allow engine to run let alone build boost