Replacing FAST EFI on HP 383, with what?

For the street
You need a single 4bbl intake and a 700 to 750cfm carb.
you don't need anything fancy when it comes to the 727; just a basic HD unit and I like a TF-II kit.
You didn't say which purple( there's like 40 of 'em)
Made the correction for ya!:lol:
I agree with AJ on cfm.
Maker and style of carb are really your call and then just take the time to tune the carb from there.
If I was to do an Edelbrock carb, I would actually do a 800 AVS II. (On top of the RPM intake.)
The new 750 Street Demon with the phenolic middle would be a very good street strip carb that tunes like the Edelbrock/TQ.