I haven't used a set "YET"
E-streets have a smaller combustion chamber 75cc IIRC {or 84cc too},
good for low compression OE engine, better cooling,
bump up to power a bit, take some weight off the nose,
they have pretty same ports as the Performer RPMs 290cfm intake/217 exhaust
great choice if your not worried about stock appearance,
get a bigger better valve & bump up the compression,
with much better flow characteristics...
good middle of the road head for a mild Mopar Wedge street build
IMO a great bang for the buck, to do a set of 40+ year old cast iron heads,
especially closed chambers, even close to the cfm flow or cc's
it'll cost just about as much, 100% Made in the USA too
my $0.02 cents
If I was doing a street car build, with a mild low compression short block
383, 400 or 440 I'd do it
I've had good luck with most all of Edelbrock's stuff
{short of the Carbs, I'm not a big fan of them}