came on the 98-02 corolla and chevy prism 1zz engine.
Not a very smooth collector but I think something with a very nice smooth large 3" collector with a Q45 throttle body, 2 to 2 1/8" diameter tubing bent properly and smoothly, Shorten the runner length to about to about 8-10" or so and it would be interesting to test. Hardest part would be making it as close to equal length as possible as that would more than likely be the most important part of making it work well. I wouldnt see why it wouldnt flow really well with a really nice collector like you see on these 4-1 headers. Another one is finding an intake manifold flange in SS If someone took a machine shop an intake manifold flange im sure one could be cut from steel pretty easily. Definitely would use a thermoblock spacer between the head and intake though as the steel will get hot and should definitely be ceramic coated to help with keeping it cool.
I think best bets would be to have it made out of aluminum tubing and have an aluminum collector made. Would be very interesting to see.