You should visit
http://www.mighty6.com. Then contact Steven Staff at
stevenm6m@suddenlink.net. He runs a quick 292 at over 700hp. He's
a member of the Texas/Gulf Coast Chapter, living in Victoria, Tx.
His brother has fabed most all of the Intake and Exhaust system.
Steve is not running a stock head so he does not have issues with port injection.
If you choose to add a crank position sensor (can be a 36-1 timing ring from a Ford Escort) the as others have mentioned then the solutions are much easier. In my books much easier to mount the crank ring/sensor than try and get boost referenced fuel regulation into a TBI which has internal fuel regulators.
One upside of going crank trigger with the EDIS-6 is its a near bullet proof ignition. Easy to hook up to the MS for timing control.
Also available now is the MS3 which is sequential injection - this allow individual cylinder fuel trim. Mind you it is another level of complexity to deal with.