Intake manifolds?
http://www.holley.com/300-121.asp
I think it would be easy to make a hat for this and put the LS4 or a 90 mm tb on the end.
The Best V8 Stories One Small Block at Time
Scroll down to post #27 this has very good things to say about the bbk intake
http://www.holley.com/300-126.asp
EDIT: Look at this drawing of it on Jegs. It's laughable how similar it is.
http://www.jegs.com/i/Holley/510/300-126/10002/-1
http://www.holley.com/300-126.asp



