there is another guy around here making his own port injection setup using megasquirt as well..

cant remember his name he has posted some pics of what his intake will be like etc. I think he was going to use dual throttles.

I was once considering getting an eaton blower from a GM 3800 engine and making an efi setup based on that, (the eaton blower has the throttle body already attatched).

My other idea was the one I mentioned earlier, using three throttle bodies, but I was kinda liking the bower more..

But for simplicity tbi would be the way to go. Now something I like about port injection is that you don't need to worry about plenum heat as you would using a tbi or carb...

Just some of my thoughts on the topic.