Performer RPM intake?

I had a DP4B on my 383 RR back in the day and it was killer. Best change
I ever made to the car (Sig Erson 284-484, Doug's headers, Mallory dist).

You can find them on eBay but used ones in good condition usually cost as
much or more than a new Performer or Performer RPM and rightfully so.

I don't know why they didn't just reissue them in place of the regular Performer
(or would they just be too close to the Performer RPM in performance?).

That said and hood clearance permitting, I'll probably get a Performer RPM for
my 400/470 build.