That might work pretty good. I took a tour of Rousch Racing back in 1998 at the SAE Motorsports Conference. The guy at Rousch told me that injected the fuel further upstream is better for power. He said they injected near the head for emissions. He said the F1 guys injected it up near the top. I saw a video on Youtube on a F1 dyno test and you could see a quick shot of the injectors shooting fuel into the top of the runners in sort of a standing wave or fog at the entrance. It made me think two 4bbl TBI units on a tunnel ram might be a good setup. It looks like you have a pretty good layout there based on what I was told.