If you are after driveability and economy (power too) you should PM Marc (EFI-DIY) about one of his setups, he did a demo at Boneville, everyone that I know that saw it was impressed (I had to leave before it happened
).
Edit:
The two threads here that cover this are
"Bonneville.... TBI Conversion - installation demo"
and
"TBI conversion - installation DVD"
Here in the "High Performance" forum.