Jury out? No, this is the same stuff Edel. has put onto a Chevy manifold for what...3-4 years. It's all developed. Fuel injection is always preferable to a carb except in certain classes. Better milage, starting, performance. But to install it, you better know what you are doing.
One thing I do wish to get off my chest though. Why is everything Edelbrock does for a Chevy first when his daughter Cammy fast tracks an early Shelby?
I have one and it rolls out to the street late this week or ealy next. I've had a few electrical problems with it but I think it's operator error. It is expensive; but I have a theoretical 400hp 5.0 in a 66 mustang with no mods to engine compartment. It's pretty stealthy until you light it up.
If your car is already apart for restoration it's not too bad of an install. I think it would have been more of a pain if the interior had been in.