Is this thru-the-muffs with real DOT tires ? How much weight are you talking about ? ?
I have very little A engine experience but a Buds "project street sleeper" would be better suited for an A engine ... this car being a early 80's Fifth Avenue.
With some reasonable weight reduction and some fiberglass parts .... I would think maybe(?) ... it could get down to 3200 or so.
With MUFFS and running through them ... with street tires .... and driving it to the track -- he wants to shoot for something that we have had a discussion about ... 11.99 et ...and get 20 mpg.