Interesting project. I'm working on something similar. I'm not worried about emissions as I have a SB100 exemption on my project. I'm casting an intake manifold that the Suzuki throttle bodies will bolt onto with the appropriate hoses. I'm using a Megasquirt ecu for both fuel and spark.
Yes you may be reinventing the wheel but at a fraction of the cost and it's a lot of fun creating an itb set for a couple hundred dollars instead of buying one for a couple of thousand!
http://usera.imagecave.com/system/sh...g&a=Locost_wk4